56 lxxxix. boragineyE (baker and wright). [Arnebia. 



Flowers small, yellow or purple, arranged in scorpioid bracteate spikes 

 or racemes. — Toxostigma, A, Rich. Tent. Fl. Abyss, ii. 80. 



Species about 12, extending from North Africa through Western Asia to India. 



Corolla yellow ; tube longer than the calyx . . 1. A. hispidissima. 



Corolla purple ; tube not longer than the calyx . 2. A. pur pur use ens. 



1. A. hispidissima, DC. Prodr. x. 94. Annual, much-branched, 

 with stem, leaves and calyx densely clothed with spreading white bristly 

 hairs. Root slender, fusiform, dyeing purple. Stem-leaves lanceolate, 

 sessile, very hispid^ |— 1 in. long ; lower oblanceolate, obtuse, narrowed 

 to the base. Spikes dense, many-flowered, finally elongated ; bracts 

 ovate-lanceolate, lower as long as the flowers. Calyx 3 lin. long ; seg- 

 ments linear. Corolla } 7 ellow ; tube longer than the calyx, hairy ; limb 

 2 lin. in diam. Nuts slightly rugose. —Wight, Ic. t. 1393; C. B. 

 Clarke in Hook. f. Fl. Brit. Ind. iv. 170. Lithosper?num hispidissimicm, 

 Lehm. PI. Asper. t. 39. Toxostigma luteum, A. Rich. Tent. Fl. Abyss. 

 ii. 86. Anchusa asperrima, Del. Fl. jEgypt. Illustr. 55. Strobila 

 hispidissima, G. Don, Gen. Syst. iv. 327. 



Upper Guinea. Northern Nigeria : Bornu ; Teli, Vogel, 91 ! 



Wile Land. Nubia : coast land, 3000-4000 ft., Bent .' Sennar, Kotschy, 

 299 ! Kordofan : Kohn Mountain, Kotschy, 253 ! Helba, Pfzmd, 466 ! Oin Grattia, 

 Muriel, S 105 ! Eritrea : Arrot Valley, Schiveinfurth Sf Riva, 688 ! 



Also in Egypt, and extending through the Orient to North India. 



2. A. purpurascens, Baker. Annual, much-branched, with stem 

 and leaves densely clothed with ascending white bristly hairs. Root 

 slender, fusiform. Stem leaves sessile, lanceolate ; lower oblanceolate, 

 obtuse, narrowed to the base. Spikes dense, finally 2-3 in. long ; bracts 

 lanceolate, very hispid, as long as the flowers. Calyx 3-1 lin. long ; 

 lobes linear. Corolla purple ; tube as long as the calyx ; limb small ; 

 lobes rounded. — Toxostigma purpurascens, A. Rich. Tent. Fl. Abyss, ii. 

 87, t. 77. 



Nile Land. Abyssinia : Adowa, Petit, 87 ! 



12. SERICOSTOMA, Stocks; Benth. et Hook. f. Gen. PI. ii. 861. 



Calyx deeply 5-lobed, but little accrescent. Corolla-tube short, 

 funnel-shaped, straight, hairy at the throat ; lobes 5, orbicular, patent. 

 Stamens 5, inserted about the middle of the corolla-tube ; filaments 

 filiform, about as long as the oblong obtuse anthers. Ovary with 

 4 distinct lobes inserted on the narrow gynobase ; style subulate ; 

 stigma capitate, obscurely 2-lobed ; ovules erect. Nuts 4, hard, ovoid, 

 erect, smooth or rugose. Seeds straight ; cotyledons flat, ovate. — 

 Much-branched perennials, with densely canescent or setose branchlets. 

 Stem-leaves alternate. Flowers small, in terminal bracteate scorpioid 

 cymes. 



Species 3—4, reaching through Western Asia to Scind. 



Leaves linear, 1 lin. wide, or less . . . . 1. S. albidum. 



Leaves oblanceolate, l|-3 lin. wide . . . . 2. S. verrucosum. 



