linear-acicular, 1½ in. long, slightly pubescent. Flowers fasciculate;
pedicels ⅓ in. long, pubescent. Corolla-lobes linear-oblong, pubescent.
Mongalla Prov. (Yei River).
=S. angustissimum= _K. Schum._
Herb, 3-4 ft. high. Leaves opp. or whorled, linear, margins revolute,
¾-2½ in. long. Umbels 6-10 fl., numerous, sessile, lateral; cor. minute
with long woolly hairs on margins of lobes; coronal lobes with bi- or
trifid horns. Follicles 2.
Bahr El Ghazal Prov. (Gumango hill in Niamniam-land).
=S. Petherickianum= _Oliv._
Hairy herb. Leaves opp. or whorled, oblong to ovate-lanceolate. Umbels
numerous, lateral at nodes, sessile, 10-15 fl.; cor. minute, hairy;
coronal lobe on inner face with an erect tooth and 2 decurrent keels.
Bahr El Jebel (Nyangara).
=S. eximium= _N.E. Br._
Tall herb. Leaves opp., oblong-ovate, cordate, 1½-3 in. long. Umbels
several, 6-10 fl., lateral or terminal; peduncles 1-2 in. long; cor.
white, lobes campanulate, ¾ in. long; coronal lobes purple or purple
brown, nearly ½ in. long.
Mongalla Prov. (Yei River); Bahr El Ghazal Prov. (Niamniam-land).
=S. sp.=
Habit of _S. abyssinicum_, but pedicels much shorter and corolla-lobes
longer.
Mongalla Prov. (Yei River).
450 =Calotropis procera= _Ait._ USHAR—Arab; BARAS—Hadendowa; OGUN or
UBUN (Dilling), LAMBŪRI (J. Eliri) & KAUROK (Kadugli)—Nuba.
Shrub or small tree; youngest parts white-tomentose. Leaves opp.,
subsessile, ovate or elliptic, 2-12 in. long, cordate, glabrous. Fl. in
lateral and terminal clusters of 3-10; cor. campanulate, ¾-1 in. diam.,
white, with purple-brown tips; coronal lobes ¼ in. long, truncate, with
2 lobes at top of each. Foll. 2, subglobose, spongy inside, 3-4 in.
long.
Throughout the greater part of the Sudan.
The latex yield an inferior Gutta-Percha. The floss from the fruit is
used for stuffing pillows. The bast fibre is strong and glossy but
difficult to extract. The leaves are used for fermenting durra in the
preparation of merissa. Almost every part of the plant is used as
medicine. The latex is an irritant poison.
451 =Kanahia laniflora= _R. Br._ ABU LEBBEN—Arab.
Riverside shrub, 4-5 ft. high. Leaves opp., lanceolate or linear-
lanceolate, 2-6 in. long, with minute bristles in axils of nerves. Fl.
on 1-2 in. long peduncles from the lateral nodes; cor. white, fragrant,
campanulate, ¾ in. long; lobes ⅓ in. densely woolly; coronal lobes 5,
fleshy with simple or bifid inflexed beaks. Foll. 2 lanceolate,
acuminate, ab. 2 in. long.
Kassala Prov. (Gallabat); Khartoum Prov.; Blue Nile Prov.; Fung Prov.
(Fazoghli: J. Araro); Upper White Nile Prov.
=K. glaberrima= _N.E. Br._
Shrub, 4-6 ft. high. Leaves opp., linear-lanceolate, 2-6 in. long, with
bristles in axils of nerves. Fl. in pedunculate several-flowered, umbel-
like lateral racemes; cor. white; lobes ⅓ in. long, with white woolly
hairs; coronal lobes deltoid-ovate, with linear-acuminate teeth at the
tops. Foll. usually solitary, lanceolate, beaked, ab. 2 in. long.
Khartoum Prov. (Shambat: Banks of the Nile).
452 =Asclepias lineolata= _Schlechter._
Stout undershr. with fleshy roots, 2-4 ft. high. Leaves opp., ovate- to
linear-oblong, 2-4½ in. long, cordate. Umbels 4-10 fl., lateral and
terminal; cor. purplish, 1 in. diam.; lobes ½ in. long, ciliolate;
coronal lobes purple, pointed, ridged between the anthers, which connive
over the style. Follicles 2, inflated ellipsoid, 3-4 in. long.
Bahr El Ghazal Prov. (Jur Ghattas & Bongo-land).
=A. Schweinfurthii= _N.E. Br._
Stems 2 ft. or more. Leaves opp., lanceolate-ovate, cordate, 2-3½ in.
long. Umbels 4-6 fl., lateral on peduncles up to 6 in. long; cor.
rotate-campanulate, 1 in. diam.; lobes ½ in. long, fringed on one
margin; corona ¼ in. long, winged. Foll. 2.
Bahr El Ghazal Prov. (Jur Ghattas).
=A. semilunata= _N.E. Br._
Stems 2-5 ft. high. Leaves whorled below, opp. above, linear or
lin.-lanceolate, 4-7 in. long. Umbels lateral on 1 in. long peduncles;
cor. lobes ⅓-½ in. long, reflexed; corona toothed. Foll. half-moon
shaped, 2½-3 in. long, inflated, echinate.
Bahr El Jebel (Madi); Belgian Congo (Niamniam-land: Wando).
=A. flavida= _N.E. Br._
White-tomentose shrub, 3-4 ft. high. Leaves opp., linear, 1½-3 in. long.
Umbels 4-6 fl., lateral. Cor. white (?), lobes reflexed, ¼ in. long,
fringed on one margin; corona dull purple. Foll. ellipsoid, bristly when
young.
Red Sea Prov. (coast, 21° N.L.).
=A. macrantha= _Hochst._
Stem 9-18 in. high. Leaves opp., lin.-lanceolate, acuminate, 3-10 in.
long. Umbels 3-6 fl., lateral and terminal on peduncle 3-11 in. long;
cor. scarlet or yellow, rotate; lobes ½ in. long; corona yellow. Foll.
usually solitary, lanceolate, 3-4 in. long.
Bahr El Ghazal Prov. (Niamniam-land: Ibba River); Mongalla Prov. (Yei
River).
=A. Phillipsiæ= _N.E. Br._
Woody, densely pubescent shrub. Leaves opp., linear, 1½-3½ in. long,
margins very revolute. Umbels lateral, 3-6 fl.; peduncle ½-¾ in. long;
cor. white, deeply-lobed; lobes ¼ in. long, reflexed, fringed on one
margin; corona with 5 falcate teeth. 2 Foll., 2 in. long, lanceolate.
Darfur Prov. (J. Marra, 7,200-9,000 ft.).
453 =Margaretta rosea= _Oliv._
Perennial herb, 12-18 in. high. Leaves opp., linear to lanceolate,
acuminate, 2-5 in. long. Umbels 3-4 in a corymb at top of the stem, and
sometimes one from the node below, each 7-16 fl., on peduncles ½-3 in.
long; cor. lobes ⅙ in. long, erect; corona toothed. Foll. often
solitary, ab. 3 in. long.
Mongalla Prov. (Yei River); Bahr El Ghazal Prov. (Niamniam-land).
454 =Cynanchum polyanthum= _K. Schum._
Pubescent, fleshy twiner. Leaves opp., ovate, acute, cordate, 2-3½ in.
long; petiole 1-2 in. long. Umbels 10-30 fl., compound, peduncle 1-1½
in. long; cor. lobes ¼ in. long; corona tubular half its length and with
5 entire or bifid teeth. Follicles 2 in. long, glabrous.
Mongalla Prov. (Yei River).
455 =Sarcostemma viminale= _R. Br._
Succulent, almost leafless shrub with switch-like, sometimes twining
shoots. Umbels many-flowered, lateral or terminal, sessile. Fl. small,
greenish-white or yellow; corona double, minute. Foll. 2.,
lin.-lanceolate, 2½-4 in. long.
Nubia (Wadi Tui between Suakin & Berber); Bahr El Ghazal Prov.
(Niamniam-land).
456 =Pentatropis cynanchoides= _R. Br._
Slender twiner. Leaves opp., oblong to ovate, ½-1½ in. long, fleshy.
Umbels 3-6 fl., subaxillary; cor. purplish-green, 5-lobed; lobes linear
from triangular base; corona with acute apex. 2 Foll., lanceolate,
beaked 2-3 in. long.
Red Sea Prov. (J. Waratab near Suakin & Karora hills); White Nile Prov.;
Upper White Nile Prov. (Barboi).
457 =Dæmia cordata= _R. Br._
Slender woody climber. Leaves opp., ovate to orbicular, cordate,
tomentose on both sides, ½ to 1 in. long. Fl. in a corymb-like raceme,
1-2 in. long; cor. small, green; corona double. 2 Follicles 1½-2½ in.
long, ovoid, beaked, echinate.
Nubian Coast; Kassala Prov. (Atbara: Goz Regeb on granite); Nuba Mts.
Prov.
=D. extensa= _R. Br._
Differs from above by more glabrous and larger (up to 5 in. long) leaves
and also large raceme, 2-16 in. long.
Red Sea Prov. (Soturba Mountains to near Karora); Blue Nile Prov.;
Kordofan, Darfur, Upper White Nile (Renk), & Mongalla Provinces.
The stems yield a fibre. The plant is used in infantile diarrhœa, also
as an emetic. The pulp of the fleshy leaves is used as a stimulating
poultice for carbuncles.
458 =Gymnema sylvestre= _R. Br._
Woody twiner. Leaves opp., ovate to lanceolate, cuneate or cordate at
base, ¾-3 in. long. Umbels subaxillary, many-flowered; cor. yellowish-
white, minute, fleshy; coronal lobes fleshy, fringed. Follicles 2½-3½
in. long, lanceolate, beaked.
Bahr El Ghazal Prov. (Jur-land, Jur Ghattas, Dar Fertit, Biri River).
The root is used for snake bite. The leaves, when chewed, are said to
destroy the taste of sugar for twenty-four hours.
459 =Marsdenia spissa= _S. Moore._ SHAGAR EL FIL (Fung)—Arab.
Woody climber. Leaves opp., ovate or elliptic-ovate acuminate 1½-4 in.
long. Cymes many-flowered, lateral; cor. greenish-yellow, rotate-
campanulate, ½ in. diam.; lobes ¼ in. long, tomentose; coronal lobes
minute, fleshy. Follicles 3½ in. long, elongate-ovoid, with broad frill-
like wings; seeds crowned with long silky hairs.
Kassala Prov. (Gallabat); Fung Prov.; Bahr El Ghazal Prov. (Wau, Jur).
Yields a fibre.
=M. rubicunda= _N.E. Br._ KNĀR (Kenissa)—Dinka.
Woody climber, young parts with salmon-red tomentum. Leaves opp.,
elliptic or elliptic-ovate, cordate, 1-3 in. long. Cor. ½ in. diam.;
lobes rotate, 1/5 in. long, greenish; corona lobes subulate and bifid.
Follicles 2, wings 4, crenate.
Nuba Mts. Prov. (Dar Nuba); Darfur Prov.; Bahr El Ghazal Prov. (Shambé
and Meshra El Rek); Mongalla Prov.
460 =Leptadenia lancifolia= _Decne._ ERG HABŪB EL KHEIL, or ABU LEBBEN
or UMLEBEINA or MABLEBEN (Meshra El Zeraf)—Arab.
Woody, tomentose climber. Leaves opp., ovate to lanceolate or variable
in shape, 1-5 in. long. Umbels many-flowered, lateral; cor. green,
rotate, lobes under ¼ in. long; throat densely bearded with white hairs;
coronal lobes fleshy, pointed. Follicles 2, lanceolate, 3-4 in. long,
glabrous.
Fung Prov. (Fazoghli); White Nile Prov. & Upper Nile Prov. (Dueim to
Kodok); Kordofan Prov.; Bahr El Ghazal Prov. (Gadein); Bahr El Jebel (up
to Lake Albert).
The pounded roots, mixed with water are said to be given to horses and
cattle for flatulency.
=L. heterophylla= _Decne._ LUWEIS—Arab; ASHENON (Kenissa)—Dinka.
Slender woody twiner. Leaves very variable from linear-hastate to oval,
¾-3 in. long. Umbels several-flowered, sub-axillary; cor. 2-2½ lines in
diam.; corona lobes fleshy, tipped with hairs. Foll. 1, lanceolate, 2-3
in. long.
Fung Prov. northwards; Darfur Prov.; Mongalla Prov. (Kenissa).
=L. Spartium= _Wight._ MARAKH or MERAKH & ZA’ANSHERAB ELMI (N.
Kordn.)—Arab; AGWAIT—Hadendowa.
Switch-like, green-stemmed, glaucous shrub, 5-10 ft. high, generally
leafless. Umbels subaxillary, flowers developing successively; cor.
yellow, 5-lobed, small; corona green, fleshy. Foll. 2, lin.-lanceolate,
terete, 3-4 in. long.
North Sudan; Red Sea, Kassala & Kordofan Provinces.
Yields a valuable fibre but difficult of extraction. Good camel fodder.
461 =Ceropegia nilotica= _Kotschy._
Slender fleshy twiner with tuberous root. Leaves opp., ovate-lanceolate,
acuminate, toothed towards apex, 1 in. long. Peduncles lateral, 2
flowered; cor. blackish-purple, yellow in throat, 1½ in. long; tube
inflated at base; lobes connate at apex, ¼ in. long; corona double,
inner yellowish.
Mongalla Prov. (Bari-land, Gondokoro).
=C. racemosa= _N.E. Br._
Slender twiner. Leaves opp., lanceolate or oblong-lanceolate, 1-2 in.
long. Flowers solitary, ⅓-1 in. apart on racemes, which are 2-4 in.
long; cor. tube ¾ in. long, hairy inside; lobes ½ in. long, connate at
apex, fringed; corona ciliate, double, 5 outer with 10 teeth ½ in. long.
Bahr El Ghazal Prov. (Jur-land: Jur Ghattas).
=C. stenantha= _K. Schum._ AKEISH or AGASH (Meshra El Zeraf)—Arab; AKON
(Meshra El Zeraf)—Dinka; AGE (Meshra El Zeraf)—Shilluk.
Slender twiner. Leaves opp., lanceolate, 1-2½ in. long, ciliolate on
margin. Cymes 3-6 fl., umbelled, sublateral; cor. greenish; tube ½ in.
inflated below; lobes ½ in. linear, connate at tips; corona double,
minute.
Upper White Nile Prov. (Meshra El Zeraf); Bahr El Ghazal Prov. (Jur-
land, Jur Ghattas).
The leaves are acid and can be eaten as spinach. The tuber is said to be
a good substitute for a potato.
462 =Brachystelma phyteumoides= _K. Schum._
Dwarf perennial; several stems, ab. 4 in. high, from a thick root stock.
Leaves opp. linear, acuminate, ab. 2 in. long, nearly glabrous. Umbel
terminal between a pair of leaves; cor. dark purple-brown; tubes short,
lobes ¾ in. long; corona included in tube, very short, outer lobes
bifid. Foll. fusiform.
Bahr El Ghazal Prov. (Jur-land; near Jur Ghattas).
463 =Echidnopsis nubica= _N.E. Br._
Leafless, succulent, obtusely 8-angled plant, angles tesselately divided
into obtuse tubercles. Fl. fascicled near tips of the stems; cor. very
small, 5-lobed, purple-brown, or purple-brown dotted on green; corona
single. Follicles up to 4 in. long and ⅓ in. thick, purplish.
Red Sea Prov. (Erkowit, Suakin).
464 =Caralluma longidens= _N.E. Br._
Succulent branching 4-angled plant; branches attenuated upwards, 5-8 in.
long; angles slightly toothed; teeth bearing fleshy, terete, deciduous
leaves. Fl. solitary or 2 together along upper part of stem; cor. dark
purple-brown; tube ¼-⅓ in. long; lobes ¼ in., ovate-lanceolate,
glabrous; outer corona of 10 lin.-subulate teeth, ⅙ in. long, inner with
5 smaller teeth.
Between Suakin & Berber (Wadi Laemeb).
=C. vittata= _N.E. Br._
Succulent, glabrous, 4-angled plant, 6-8 in. high; angles slightly
toothed; branches ⅓ to 1 in. thick, much attenuated upwards. Fl. 1-4
together, scattered on the terminal 2-4 in. of the branches; cor. tube
whitish, streaked dark purple, ab. 1/7 in.; lobes ⅙ in. long, dark
purple, glabrous; outer corona of 10 minute teeth.
Red Sea Prov. (21° N.L. between sea level and 4,000 ft.).
=C. retrospiciens= _N.E. Br._ KAREIB—Hadendowa.
Succulent cactus-like plant, up to 3 ft. high, with ascending deeply
4-angled toothed branches, teeth broad, decurved. Umbels terminal or
subterminal, several together forming a compound globose head up to 3 or
4 in. diam. Cor. 5-lobed, deep purplish-brown, tube ¼ in. long; lobes ¼
in., deltoid, fringed with dark hairs; outer corona with 5 pairs of
teeth. Foll. ab. 6 in. long, linear, terete.
Kassala Prov. to Red Sea Prov.
465 =Huernia macrocarpa= _N.E. Br._
Succulent perennial; stems 3-4 in. high, subquadrangular, angles
coarsely toothed, teeth fleshy, recurved spinescent at apex. Follicles
in pairs, 5-6 in. long, narrow, acute or hooked at apex.
Red Sea Prov. (Sinkat); Bahr El Ghazal Prov. (Jur-land; Abu Gurun).
=RUBIACEÆ.=
466 =Sarcocephalus esculentus= _Afzel._ KARMUDODA—Arab; DOMA—Zande.
Small tree. Leaves opposite, ovate-oblong, cordate, ab. 6 in. long,
almost mucronate; stipules interpetiolar, as in many of this family,
caducous, ovate, short. Flower heads orange-coloured, globose, crowded;
pistils exserted.
Bahr El Ghazal Prov.
Yields a gum. The core of the flower-heads is eaten. Wood light yellow
with darker markings, density 0.676. A yellow dye is obtained from the
roots.
=S. Russeggeri= _Kotschy._ KARMUDOD’A (Baggara)—Arab; N’DU—Golo; DAMMA
or DOMA—Zande.
Shrub, up to 20 ft. high. Flower-heads white, sweet-scented, globose.
Leaves usually broadly elliptical.
Fung Prov.; Nuba Mts. Prov. (Korarak); Bahr El Ghazal Prov. (Jur-land,
Niamniam-land).
The core of the flower-heads is eaten, but in excess acts as an emetic.
The wood, which is of a red colour, is used by the Niamniams for the
manufacture of curious oracles, consisting of two pieces of wood,
flattened and polished, which may or may not adhere together after being
wetted. The root is said to be a fine bitter tonic.
467 =Adina microcephala= _Hiern._ MISTIKA or MISHKA (Medani, Fung
Prov.)—Arab.
Moderate-sized tree. Leaves lanceolate, in whorls of 4, 4-6 in. long.
Flowers compact on a globose, bracteolate receptacle. Seeds winged at
each end.
Fung Prov. (Singa & Fazoghli); Bahr El Ghazal Prov. (Dar Fertit).
468 =Mitragyne macrophylla= _Hiern._
Moderate-sized tree. Leaves elliptical, often broadly so. Flowering
heads globose, cymosely arranged or umbellate. Fruit dicoccous; seeds
winged both ends.
Bahr El Ghazal Prov. (Niamniam-land & Jur-land).
The wood is used for making canoes, furniture and for housebuilding on
the West Coast.
=M. africana= _Korth._ YO?—Arab; ANGOTO—Dinka; N’DUNGO—Golo; BIAMA—Jur;
LAO—Nuer; KOFOKOFO—Zande?
Moderate-sized to fairly large tree, growing not far from water. Leaves
ovate-elliptical, more or less cordate. Flower-heads globose, solitary,
1 in. diam.; cor. white, turning yellow. Seeds 2-winged.
Bahr El Ghazal Prov. (mouth of Bahr El Arab & Wau).
Wood white, rather soft, density 0.560, used for carving and in cabinet
work; known as African Lime.
469 =Hymenodictyon Kurria= _Hochst._
Shrub or small tree. Leaves obovate to oval, 3-8 in. long. opposite;
interpet. stipules ovate-oblong, ½ in. long, deciduous. Inflorescence
spicate, 7 in. long. Bracts opposite, elliptical, marcescent, ab. 2 in.
long on 1 in. long stalks.
Bahr El Ghazal Prov. (Niamniam-land: summit of Mt. Baginse).
=H. scabrum= _Stapf._
A small scabrid shrub. Leaves obovate, 3 in. long, 1½ in. broad, scabrid
on the nerves below. Flowers not seen. Fruits narrowly ellipsoid, ¾ in.
long, prominently lenticellate. Bahr El Jebel (Bari & Madi).
470 =Crossopteryx Kotschyana= _Fenzl._ DARITAR—Dinka; M’BILI or
TIRI—Golo; AKOS—Jur.
Small tree. Leaves coriaceous, elliptical, 1-8 in. long; stip. deltoid,
acuminate. Flowers cream-coloured or pink, fragrant, in dense corymbose
panicles. Capsule 2-celled, globose, crustaceous, ab. ¼ in. diam.; seeds
peltate.
Kassala Prov. (Gallabat); Fung Prov. (Fazoghli); Bahr El Ghazal Prov.
(Jur, Niamniam & Bongo lands); Uganda (Nile Prov.).
471 =Pentas carnea= _Benth._
Shrubby, 1-2 ft. high, harshly pallid-puberulous. Leaves ovate-oblong to
lanceolate-oblong, 1-6 in. long; stip. multipartite, subulate. Cymes
usually dense, 1-3 in. in diameter. Cor. purplish, hairy at throat.
Capsule 2-celled, coriaceous, many seeded.
Bahr El Jebel (Madi).
=P. arvensis= _Hiern._
Rambling perennial, 2 ft. high. Leaves subsessile, elliptic-lanceolate.
Cymes 1-3 in. across; cor. white with purple throat, which is hairy.
Bahr El Ghazal Prov. (Mittu-land).
=P. Schweinfurthii= _Scott Elliot._
Herb. Leaves ovate-elliptic, acute, 4½ in. long, 2 in. broad, with
numerous densely pubescent lateral nerves. Flowers light mauve, in
paniculate clusters.
Mongalla Prov. (Yei River); Bahr El Ghazal Prov. (Niamniam-land).
472 =Otomeria madiensis= _Oliv._
Somewhat shrubby perennial, up to ab. 3 ft. high, hairy. Interpet.
stipules sheathing, each with 3 subulate teeth. Leaves elliptical, hairy
on veins, opposite. Spikes terminal, simple or branched, 1 ft. long;
flowers 1 in. long, pink; cor. tube hairy. Capsule ¼ in. long.
Bahr El Ghazal Prov. (Niamniam-land); Bahr El Jebel (Madi).
473 =Oldenlandia grandiflora= _Hiern._
Herb, up to 4 ft. high. Flowers crimson, mostly tetramerous in this
genus, corymbose; cor. salver-shaped. Fruit subglobose, crowned with
calyx teeth. Leaves opposite, upper sometimes needle-shaped, lower
narrow-lanceolate; stipules sheathing, short, 2-3 pointed.
Kassala Prov. (Gallabat); Fung Prov. (Fazoghli & Jongol’s Post);
Kordofan Prov. (Obeid & Um Sutt); Nuba Mts. Prov. (Dilling); Darfur
Prov. (Kulme).
=O. senegalensis= _Hiern._
Herb, up to 3 ft. high. Flowers white or pink, paniculately cymose; cor.
salver-shaped, tube slender, glabrous. Leaves narrow-lanceolate. Fruit
as above.
Kassala Prov. (Gallabat); Red Sea Prov. (Soturba); Khartoum Prov.; Fung
Prov. (Fazoghli); Kordofan Prov. (Obeid); Mongalla Prov. (Bari-country).
=O. Schimperi= _T. Anders._
Annual, 1-3 ft. high, glandular-scabrous; branches virgate. Leaves
linear; stipules 1-3 pointed. Flowers in terminal corymbose cymes; cor.
salver-shaped, tube much longer than calyx. Capsule subglobose.
Red Sea Prov.; Khartoum Prov.; White Nile Prov. (J. Arashkol).
=O. virgata= _DC._
Switch-like herb, 2 in. to 2 ft. high. Leaves linear, curled margins;
stipules with 2-3 bristly points. Flowers panicled; cor. cylindrical or
salver-shape. Fruit sub-globose.
Kordofan Prov. (Tueir); Bahr El Ghazal & Mongalla Provinces.
=O. Welwitschii= _Hiern._
Small herb with white tubular, cruciform flowers.
Red Sea Prov. (Erkowit & Dongonab).
=O. strumosa= _Hiern._
Herb, up to 18 in. high. Leaves linear-lanceolate. Cymes corymbose,
terminal; cor. salver-shaped, tube much longer than calyx. Fruit
subglobose.
Blue Nile Prov. (Upper); Kordofan Prov.
=O. lancifolia= _Schwfth._
Herb with linear-lanceolate leaves. Flowers small, axillary, solitary;
cor. not longer than calyx. Capsule furrowed, compressed-globose.
Blue Nile Prov. (near Lakanda); Fung Prov. (Jongol’s Post); Bahr El
Jebel (Madi); Bahr El Ghazal Prov. (Niamniam-land).
=O. macrophylla= _DC._
Aquatic or marsh herb. Leaves sessile, linear-lanceolate, up to 3 in.
long. Flowers white or pale blue, pentamerous, in racemose or panicled
cymes. Capsule minute.
Blue Nile Prov.; White Nile Prov.; Bahr El Ghazal Prov. (Niamniam-land);
Mongalla Prov. (Bor).
=O. trinervia= _Retz._
Weak, slightly hairy annual. Leaves broadly ovate or rotundate, tapering
to 3-nerved base. Flowers in small clusters on short peduncles,
tetramerous; cor. length of the calyx. Capsule hirsute, globose.
Bahr El Ghazal Prov. (Jur Ghattas).
=O. corymbosa= _Linn._
Erect or ascending annual, up to 1 ft. high. Leaves sessile, linear, or
apiculate. Stipules short, pectinate. Flowers usually in pairs, on
filiform peduncles. Corolla white.
Bahr El Ghazal Prov. (Jur & Bongo lands, Shambé); Mongalla Prov. (Bor).
A decoction of the root is used in bilious fevers.
=O. octodon= _A. Rich._
Low, straggly herb. Leaves linear, acute, about ½ in. long, Flowers very
small, clustered and sessile at the nodes. Calyx lobes setose.
Nubia; Blue Nile Prov.; Kordofan Prov.; Bahr El Ghazal Prov. (Wau &
Nianniam-land).
=O. capensis= _Linn._
Herb, 4-9 in. high; branches 4-angled. Leaves narrow-linear, revolute.
Peduncles 2 to several together, 1-flowered, axillary or terminal; cor.
white, slightly longer than calyx. Capsule minute, 4-ribbed.
Kordofan Prov.; Bahr El Ghazal Prov.
=O. wauensis= _Schwfth._
Glabrous herb, 1 ft. high; branches with 4 raised lines. Leaves linear;
stipules sheathing, with many bristles. Flowers mostly pentamerous, in
pairs, small. Capsule coriaceous, oblong, small.
Bahr El Ghazal Prov. (Wau River).
=O. Heynei= _Oliv._
Herb, 1-2 ft. high. Leaves linear-lanceolate. Lower flowers solitary,
upper in a paniculate cyme. Cor. salver-shaped; tube slender, glabrous
within, twice the length of calyx. Fruit subglobose.
Fung Prov. (Roseires); Kordofan Prov.; Bahr El Ghazal Prov. (Jur Ghattas
& Niamniam-land).
=O. effusa= _Oliv._
Tall herb. Leaves narrow-linear, revolute. Flowers 4-merous, lilac, in
paniculate cymes. Fruit globose.
Khartoum Prov.; Blue Nile Prov. (Rufaa).
=O. cf. O. effusa= _Oliv._
Almost leafless herb with weak branches. Flowers pale red outside;
corolla very slender, ¾ in. long, with 4 linear very acute lobes, fruits
1/10 in. long.
Kordofan Prov. (Um Dam, 1,245 S.G.H.).
=O. sp.=
Leafy much-branched herb. Leaves linear-oblanceolate acute, 1½ in. long,
shortly pubescent. Corolla ¼ in. long, with 4 short obtuse lobes.
Mongalla Prov. (Sheikh Tombé, 1,648 S.G.H.).
=O. noctiflora= _Hiern._
Glabrous annual. Leaves linear. Flowers white, opening at night.
Red Sea Prov.
=O. hedyotoides= _Boiss._
Herb, 6 in. to 1 ft. high. Leaves linear-oval. Flowers minute, clustered
in axils of the leaves; cor. white. Capsule coriaceous, 4-ribbed.
Blue Nile, Kordofan & Bahr El Ghazal Provinces.
=O. dolichantha= _Stapf._
Slender herb with subsimple stems. Leaves lanceolate, acute, sessile,
about 1¾ in. long, glabrous. Flowers white, sweet-scented. Corolla very
long, up to 5 in. long, very slender.
Mongalla Prov. (Yei River); Bahr El Ghazal Prov. (Niamniam-land).
474 =Mussænda luteola= _Del._
Shrub. One lobe of calyx enlarged into a yellow leaf. Cor. 5-lobed,
yellow, fragrant.
Fung Prov. (Singa); White Nile Prov.; Bahr El Ghazal Prov. (Mittu-land:
near M’volo & Niamniam-land); Upper Sobat; Mongalla Prov. (south of
Gondokoro); Lake Rudolf.
=M. arcuata= _Poir._
Climbing shrub. One lobe of calyx enlarged into a white leaf. Cor.
5-lobed, yellow with purplish or orange, hairy throat.
Bahr El Ghazal Prov. (Jur, Niamniam & Bongo lands); Mongalla Prov. (Yei
River District).
=M. erythrophylla= _Schum._ & _Thonn._