Host plants are _Khaya senegalensis_, _Zizyphus mucronata_, _Cratæva religiosa_ and _Acacia tortilis_. =var. salicifolius= _Sprague._ Leaves lin.-lanceolate or lin.-oblanceolate, 2½-4 in. long. Darfur Prov. (J. Marra, 7,000 ft.) Parasitic on a _Cordia_. =L. Schweinfurthii= _Engl._ Parasitic. Leaves opp. or subopp., broadly ovate, 2-3 in. long, cuneate to cordate. Umbels axillary, solitary, 9-10 flowered; cor. under 1½ in. long, pilose outside, swollen at each end; tube slit ab. ½ in. down; lobes erect, ⅓ in. long, spoon-shaped; filaments toothed near apex. Bahr El Ghazal Prov. (Jur: J. Ghattas). Parasitic on _Ficus platyphylla_ Del. =L. celtidifolius= _Engl._ Parasite; young parts rusty-pilose; branchlets lenticellate. Leaves opp. or subopp., ovate-oblong, 1½-3 in. long. Umbels axillary, solitary or ternate, 9-13 flowered; cor. showy, scarlet, 1⅓ in. long, swollen both ends; upper end 5-keeled, tube slit ½ in. down; lobes erect, spoon- shaped; filam. toothed. Darfur Prov. (J. Marra, 6,500-8,000 ft). =SANTALACEÆ.= 371 =Thesium Schweinfurthii= _Engl._ Spreading perennial, up to 9 in. high; branches 4-angled. Leaves ab. ¾ in. long, linear, keeled. Infl. arranged raceme-like at ends of short branches and subtended by ⅓ in. long bract and 2 small bracteoles; per. minute, green, 4-5 lobed, valvate, hairy at tip; st. 4-5 small. Fr. globose, 10-ribbed, minute. Bahr El Ghazal Prov. (Jur: Khor Mulmul). =RHAMNACEÆ.= 372 =Zizyphus orthacantha= _DC._ Shrub or small tree, armed or unarmed. Leaves oblong to orbicular, 3-5 nerved from the base, glabrous above, shortly ferruginous-tomentose below and on extremities. Flowers greenish, in small axillary cymes. Fruit edible. Kordofan Prov. (Masgul & J. Sungor); Upper Nile Prov. (Kodok). =Z. abyssinica= _Hochst._ Differs from above in its broadly ovate, acute leaves, very oblique at the base and 2-5 in. long. Kassala Prov. (Gallabat); Bahr El Ghazal Prov. (Jur Ghattas: Bongo-land: Sabbi); Fung Prov. (Roseires); Nuba Mts. Prov. (Kadugli). =Z. Spina-Christi= _Lam._ SIDDIR & NABAK—Arab; BUSA (fruit GHOT)—Hameg. Very thorny shrub; prickles usually one straight and one recurved. Leaves ovate to lanceolate, equal at the base, crenate-serrate, 1-3 in. long. Fruit edible. Khartoum Prov. (6th cataract); Blue Nile Prov. (Eilafun); North Sudan. =Z. mucronata= _Willd._ SIDDIR, & NABBAK EL FIL—Arab; GABĀT & TAGABA—Hadendowa; KASSLA—Rashida; KWAII (Dilling), TITTAWYI (J. Eliri) & TINGRA (Kadugli)—Nuba; LĀNG—Shilluk; LANGI & LUKATI—Bari; LĀNG (Kaka & Kenissa) or LĀNT (Kenissa) & LANF (Renk)—Dinka; BWAU—Nuer; OM KURSAN—Hameg. Small tree or large shrub, armed or unarmed. Leaves broadly ovate or ovate-cordate mucronate, crenate-serrate. Cymes 10-20 flowered. Red Sea Prov.; Kassala Prov.; Bahr El Ghazal Prov. (mouth of Bahr El Arab); Red Sea Prov.; White Nile Provinces; Nuba Mts. Prov.; Mongalla Prov.