FLORA OF ADEN. 
long, yV-g- inch broad, very stout and tough, midrib very obscure, 
margins much inrolled when dry. 
Umbel simple, often contracted into one head, 1-1J inches in 
diameter, of densely crowded spreading spikelets; bracts 3-5, lowest 
suberect, dilated at the base, often 3-6 incLes long, similar to the leaves. 
Spikelets ^-1 by J-J inch, oblong-lanceolate, compressed, 10-24- 
flowered; rhachilla stout, scarred, not winged. Glumes reaching J by 
inch, oblong-lanceolate, cymbiform, with a short stout mucro 
extending beyond the rounded tip, with many reddish-brown nerves 
and hyaline margins. Stamens 3 ; filaments tV inch long, ligulate ; 
anthers yellow, i inch long, narrowly linear, muticous. Style short ; 
branches 3, linear, rather long. 
Nut as long as i the glume, ob ovoid, unequally trigonous. 
Flowers January 1872 (Thomson), February 1851 (Thomson), 
March 1878 (Perry), Nov. 1888 (Schweinf.), Dec. 1888 (Schweinf.), 
Dec. 1889 (Defh). 
Locality : — Near the seashore (Balfour) ; plain of Maaia (Defl.) ; 
Goldmore Valley (Defl., Schweinf.) ; above the coal depot of the Messag. 
Marit. (Schweinf.) ; great valley between Steamer-Point and town 
(Marcheselti) ; without locality (Birdw., Perry, Thomson). 
Distribution : — Senegambia, Togo, Egypt, Nubia, Abyssinia, Eritrea, 
Central and S. Arabia, S. Persia, Sind, Gujarat, Western India, Laccadive 
Islands, Ceylon. 
. . '• ' '• • ' 
2. Cyperus effusus Rottb. Descr. et Ic. PI. p. 22, tab. 12, fig. 3; 
Kunth Enum. PI. II, 47 ; Steud. Syn. PI. Glum. II, 29 ; Edgew. 
Journ. As. Soc. Beng. XVI, 1220; Boeck. in Linnsea XXXV, 543; 
Clarke Journ. Linn. Soc. XXI, 112; Clarke in This.-Dyer. Fl. Trop. 
Afr. VIII, 325 ; Hook. Fl. Brit. Ind. VI, 603. 
Cvperus proteinolepis Steud. Syn. PI. Glum. II, 15; Boeck. in 
Linnsea XXXV, 522 ; Clarke in Journ. Linn. Soc. XXI, 113. 
Cyperus oonglomeratus var. effusa Boiss. Fl. Or. V, 369. 
Cyperus conglomerate var. major Boeck. in Linnsea XXXV, 544 
(partim) ; Clarke in Journ. Linn. Soc. XXI, 112. 
Cyperus curvulus Boeck. in Linnsea XXXV, 541 (partim). 
Cyperus densus R. Br. in Salt Abyss. Append, p. 63 (nomen tantum) . 
Cyperus involutes R. Br. 1. c. (nomen tantum). 
Description : — The stem is rather stouter than in C. cruentus ( vide 
infra) striate, terete, hardly at all trigonous even at the top. 
Spikelets nearly as those of C. cruentus , i,e. } narrower with less 
