460 CLVi. CYPERACE^ (clarke). [Scirpus. 



ovate, shortly acuminate ; otherwise as S'. Isolepis. — Boeck. in Linnaea, 

 xxxvi. 499 ; Ridley in Journ. Linn. Soc. xxvii. 67 ; C. B. Clarke in 

 Durand & Schinz, Conspect. Fl. Afr. v. 627, and in Bull". Herb. Boiss. 

 iv. Append, iii. 33 ; Urban, Syrnb. Antill, ii. 94 ; Kendle in Cat. 

 Afr. PI. Welw. ii. 128. Isolepis micrantha, Roem. & Schultes, Syst. 

 Veg. ii. 110 ; Kunth, Enum. ii. 203. Hemicarpha subsqitarrosa, Nees 

 in Mart. Fl. Bras. ii. i. 61, t. 4, fig. 1 ; Benth. et Hook. f. Gen. PL iii. 

 1053 ; Ridley in Trans. Linn. Soc. ser. 2, Bot. ii. 162. Hypolytrwni 

 capillare, Schrader ex Nees in Mart. Fl. Bras. ii. i. 61. 



ILo-wer Guinea. Angola: Loando; margins of ponds near Conceigao, H^'el- 

 tvitsch, 6981 ! 6996 ! Damaraland : Upingtonia, Schinz ! 



Throughout America, very common. 



This, like the preceding species, has sometimes 1 (rarely 2) hyaline scale inside 

 the glume. 



Imperfectly known species. 

 27. Schoenoplectus senegalensis, Palla in Engl. Jahrh. x. 299. 

 Central Africa ; ex Falla. 



There is no description. The plant if not a Scirpus, is probably one of the 

 ScirpecB. 



12. PICINIA, Schrad.; Benth. et Hook. f. Gen. 

 PL iii. 1052. 



Gynophore minute, obpyramidal, often trigonous or toothed on 

 the upper margin, carrying the ovary or nut, inserted within the 

 stamens ; otherwise as Scirpu8\ Sect. Isolepis, 



Species 58 ; whereof 55, i.e. all except the 3 below enumerated, are confined to 

 Extratropical South Africa. 



The genus, in babit as in character, is as Scirpus, Sect. Isolepis. The subjoined 

 species are glabrous, the stem without nodes between the basal leaves and the head 

 of spikelets, the hypogynous bristles absolutely 0. 



Stems tufted, elongate, slender; glumes scarcely ^ 

 in. long. 

 Heads of 3-1 spikelets ; stems setaceous . .1. F.jiliformis. 



Heads of 6-20 spikelets ; stems slender . , . 2. F. gracilis. 



Stems solitary, ^-1 in. long; glumes 4 in. long. . 3. F. clandestina. 



1. F. filiformis, Schrad. Anal. Fl. Cap. 46. Glabrous. Stems 

 2-8 in. long, setaceous, densely tufted on a wooded base ; no stolons 

 seen, but most of the wiry-rooted species throw stolons some- 

 times. Leaves J the length of the stem, setaceous ; sheaths 

 pale brown with scarious edges that early wither up, the upper- 

 most leafless. Head of 3-1 spikelets J-| in. long; bracts 2-3, 

 lowest J- J in. long, setaceous, suberect. Glumes ovate, obtuse, 

 strongly marked by chestnut-red striations. Style linear ; branches 3. 

 Nut less than ^ the length of the glume, ovoid, trigonous, smooth, 

 black, top pyramidal ; gynophore about J the length of the nut, pallid, 

 narrowly obpyramidal, the upper margin with 3 depressed rounded 



