118 xcviii. ACANTHACE^ (clarke). [CvossaTvira, 



Imjyerfectly known species. 



14. C. parviflora, »S'chweinf. d- Volk. Liste PI. Soinal. 17. 



Wile Iiand. Somaliland : Salul torrent, Ohika. 



This species is not described, but is said to be C. parviflora, Lindau, I.e. This 

 sliould mean, Lindau in Ann. Istit. Bot. Roma vi. (1896) 72 ; but the species 

 C. parviflora has not been found in that volume nor anywhere else. 



21). CRABBEA, Harvey partly ; Benth. et Hook. f. Gen. PI. ii. 1092. 



Calyx-segments 5, acute, more or less unequal. Corolla J-J in. long ; 

 lobes 5, subequal, in 2 lips ; anticous 3-lobed lip folded down over the 

 other in bud. Stamens 4, subsimilar ; filaments subglabrous ; anthers of 

 2 mutieous oblong cells, one a little lower, sometimes one cell smaller 

 or hardly any ; pollen globose, reticulate. Ovary glabrous ; ovules 4-2 

 in each cell ; style glabrous, articulated on the ovary ; one stigma 

 a rhomboid short plate, the other nearly wanting. . Capsule small, nar- 

 row-oblong, 8-4-seeded ; seeds discoid,covered with fine simple hygro- 

 scopic hairs. — Low shrubs ; hairs simple, tawny. Inflorescence in dense 

 axillary or peduncled heads ; unilateral racemes (or scorpioid cymes) 

 twisted and rolled up ; bracts large, one fertile, one sterile, ovate or 

 oblong, falcate, usually spine-toothed ; bracteoles 0. 

 Species 6, in Tropical and South Africa. 



This genus has been arranged next Sarleria, solely because of the bracts and 

 heads. The numerous ovules, the 5 separate sepals, and the globose reticulated pollen, 

 show that its real affinity must be sought elsewhere. 



Secondary nerves of leaves obscure ; cystoliths conspicuous. 

 Heads subsessile ; posticous sepal linear. 



Leaves pubescent on the nerves, otherwise scarcely 



hairy ........ 1. nana. 



Leaves hairy on both face?, specially the lower . 2. hirsuta. 

 Heads peduncled ; posticous sepal elliptic-acuminate . 3. veluiina. 

 Secondary nerves of leaves conspicuous on the lower face 4. reticulata. 



1. C. nana, Nees in DC. Prod. xi. 162. Root woody; branches 

 2-9 in. long, flexuous, fuscous, hairy. Leaves 4 by 1\ in., oblong-elliptic, 

 when mature scabrid hairy on the nerves beneath, otherwise glabres- 

 cent, cystoliths prominent on the upper face, tip rounded, margin 

 hardly wavy-crenate, base narrowed ; petiole 0-J in. long. Heads 

 axillary, 1-2 in. in diam. ; outer floral leaves Ij by h in., acute, 

 glabrescent, shining, spinous teeth | in. long; fertile bract | in. long, 

 oblong, falcate. Calyx § in. long, of 5 pale hairy linear subequal 

 sepals. Corolla J in. long. Capsule J in. long. — T. Anders, in Journ. 

 Linn. Soc. vii. 32 ; Lindau in Engl. & Prantl, Pflanzenfam. iv. 3 B. 313. 

 C. drsioidea, Nees in DC. Prod. xi. 1G3. C. ovalifolia, Ficalho A: Hiern 

 in Trans. Linn. Soc. ser. 2, Bot. ii. 24, t. 6, fig. A. Ruellia nana and 

 R. cirsioides, Nees in Linnaea, xv. 354, 355. 



Mozamb. Bist. British Central Africa : Nyasaland ; Manganja Hills, Kirk ! 

 Zambesi head- waters, Serpa Pinto. 



Also in South Africa. 



