446 CLVi. cYPERACEiE (clauke). [Bulhostylis^ 



2000-6000 ft., H^^kyfe ! Mount Malosa, 4000-6000 ft., Whyte ! MoMit Zomba,. 

 4000-6000 ft., Whyte ! Mount Mlauji, Whyte I 



Plentiful in Madagascar, and also received from the Transvaal. 



38. B. cylindrica, C. B, Clarke in Durand d: Schinz, Conspect, 

 Fl. Afr. V. 613. A slender annual. Stems tufted, 4-6 in. long, 

 setaceous, at the top glabrous, with 1 sessile and two long-pedicelled 

 spikelets. Leaves hardly 1 in. long, setaceous ; sheaths nearly glabrous, 

 but with a few long very slender white hairs in the throat. Bracts to- 

 the umbel hardly ^ in. long. Spikelets J by -/tt in., narrow-cylindric, 

 rusty-brown. Glumes obscurely keeled, ovate-oblong, obtuse, pubescent 

 on the back, long ciliate on the margin ; keel 3-nerved, not excurrent. 

 Nut less than | the length of the glume, trigonous, broadly obovoid^ 

 truncate, yellow-brown, smooth, obscurely reticulated. Style as long as 

 the nut ; branches 8, long ; base persistent on the nut, small, button- 

 like, brown, 



&o\irer Guinea. Angola: Huilla ; Humpata. iV'^w^o>i, 28 ! 



Imperfectly known species, 



39. Scirpus (Oncostylis) buettnerianus, Boeck. Cyp. Novce^ 

 i. 20. Pale green, tufted ; roots fibrous, capillary. Stems 4-6 in. long,, 

 setaceous, gently curved, obsoletely 4-angled, smooth, at the base many- 

 leaved. Leaves much shorter than the stem, setaceous, channelled^ 

 acute, near the bop spinulose ; sheaths pale brown, bearded in the 

 throat. Plead \-\ in. in diam., subhemispheric, of 4-8 spikelets; bracts 

 3, setaceous, dilated towards the base, rusty-brown ciliate, the lowest 

 twice longer than the head. Spikelets J| in. long, ovoid, terete, 7- 

 flowered. Glumes spirally imbricate, keeled, ovate, obtuse, glabrous 

 on the back, chestnut-coloured, not ciliate on the margin. Nut less- 

 than \ the length of the glume, minute, round obovoid, truncate, 3- angled 

 with convex faces, pale brown, pearly white with many small dots ; 

 style-base very minute, depressed, brown. — Boeck. in Yerhandl. Bot. 

 "Ver. Brandenb. xxxi. 71. 



tMOvrex Guinea. Lower Congo: Underhill (Tundua), Biittner, 4, 5 (ex. 

 Boeckeler), 



11. SCIRPUS, Linn. ; Benth. et Hook. f. Gen. PI. iii. 1049 (incl. 

 HEMICARPHA, Nees; Benth. et Hook. f. I.e. 1053). 



Spikelets of many perfect flowers, with imperfect ones at the top ; 

 0-2 lowest glumes empty. Fertile glumes in 3 or more spirals. 

 Hypogynous bristles usually retrorse-scabi id or 0, plumose in S. littoralis ; 

 perhaps represented by hyaline scales occasionally present in S. Isolepis- 

 and S. micravthus. Stamens 3-1, anterior; anthers muticous or 

 scarcely crested. Ovary sessile (if stalked cf. Ficinia) ; style long 

 linear or hardly any ; branches 3 or 2, long or short ; style-base not 

 enlarged, not distinct by a constriction or difference in structure, but 



