FLOfiA OF ADEN, 
355 
distant glumes than the spikelets of C. conglomeratus ; otherwise as 
the two species here described. 
“ The spikelets in this species are usually 2 0-40 -flowered (the glumes 
standing much closer than in C. conglomeratus) } and sometimes they are 
(though narrow) more than 1J inches long with 60 flowers. It should 
be understood that this series (G. conglomeratus , cruentus, ejfnsus) 
are considered but one species by Boissier and by Cosson (botanists who 
generally took a narrow view of species) ; while Boeckeler has described 
them as 6 or 7 species. The variability of the series is great, and a middle 
course has been taken here' of collecting the forms under the 3 old types 
of Rottboell. But as Boeckeler has grounded his species largely on the 
size of the specimens, the curvature of the stems etc., (esteemed 
as of small import here), the synonymy has become both complex and 
imperfect/ 3 * 5 (Clarke in This. -Dyer FI. Trop. Afr. VIII, 326). 
Locality : — Gravelly slopes of the Shum Shum Range (Hildebrandt, 
Ellenbeck); without locality (Edgew., Birdw.). 
Distribution : — Upper Egypt, Abyssinia, Eritrea, Syria, Central and 
8. Arabia, Socotia. 
3, Cy perns cruentus Rottb. Descr. et Ic. 21, t. 5, fig. 1, 4; Kunth 
Enum. II, 82 ; Clarke in Durand and Schinz Conspect. EL Afr. V, 555, 
and in This.-Dyer EL Trop. Afr. VIII, 825. 
Cyperus falcatus Nees et Ehrbg. ex Boeck, in Linnsea XXXV, 
546, et in Flora (1879) p. 550 ; Schweinf. Beitr. EL Aethiop. 215, et in 
Bull. Herb. Boiss. II, Append. II, 47 ; Zarb Cat. Sp6c. Bot. Pfund, 
39. 
Cyperus proteinolepis Steud. Syn. PL Glum. II, 15 (partim) ; Boeck, 
in Linnsea XXXV, 522, (partim, at least Kotschy, n. 27, cited). 
Cyperus curvulus Boeck. in Linnsea XXXV, 541 (partim). 
Cyperus conglomeratus T. Anders, in Journ. Linn. Soc. V, Suppl. 
p, 38 ; Clarke in Journ. Linn. Soc, XXI, 112 var. a; Schweinf. in Bulk 
Herb. Boiss. II, Append. II, 47. 
Cyperus pungens Boeck. in Linnsea XXXV, 538. 
Description : — Stems at the top trigonous. Spikelets narrower and 
glumes less .distant on the rhachilla, but otherwise as C. conglomeratus . 
Flowers and fruits in March and April (Schweinf.). 
Locality '. — Near the seashore (Hook., Ander.). Goldmore Valley 
(Lunt) ; above the coal-depot of the Messag. Marit. (Schweinf.) ; without 
locality (Birdw.). 
Distribution : — Upper Egypt, Nubia, Eritrea, Arabia, Baluchistan. 
