38 FLORITLA ADENENSIS. 



Spatha 2J unc. longa. Perigonium album, tubo incluso 5-7 imc. 



longum. 

 My plant, though not in flower, is doubtless the same as Herbert's spe- 

 cies. It grows in clumps in one or two of the narrow valleys in Aden. 

 Boissier quotes Schimper's number as 676 ; but the plant in the Hookerian 

 herbarium is marked 876. My description is drawn partly from my own 

 specimens and partly from the MS. diagnosis of Herbert in the Hookerian 

 herbarium. 



OrdoXL. CYPEEACEJE. 

 1. Cypertis, Linn. 



1. C. conglomerates (Rottb. Gram.t. 15. fig. 7). Glaucescens; radice 

 fibroso, tomentoso, culmis erectis e denso foliorum caespite plurimis, 

 rare solitariis, striatis, obtuse triquetris ; foliis erectis, rigidis, subtere- 

 tibus, canaliculars, mucronulatis, margine scabridis, basi culmis vagi- 

 nantibus, purpurascentibus ; involucro 3-4-phyllo, inaequali ; foliolis 

 2, capitulum superantibus, uno inferiore, altero longiore ; umbellis in 

 apice culmorum capitatis, solitariis, subsessilibus, vel plurimis insequa- 

 liter pedunculatis, radiatis ; spiculis 5-20, sessilibus, oblongis, obtusis, 

 compressis, imbricatis, multifloris ; squamis ovatis, obtusis, plurimi- 

 nerviis, carinatis; stylo trifido. 



Hab. Aden, in locis depressis prope littus (HooJc.jil. et T.\ T. Anders.). 



Distr. In Arabia Felici ! et Petrsea ! oris Sinus Persici ! iEgypto ! Algeria ! 



Planta magnitudine variabilis, plerumque pedalis, sed marcescentia 2-3- 

 uncialis ; radicibus exceptis, glaberrima. Folia culmos non superantia; 

 involucri foliolum foliis longius, 3-4 unc. longum, radii ^-\-\- unc. longi. 



Edgeworth does not enumerate this species among the plants found by 

 him at Aden, but records Cyperus effusus and Jeminicus, Rottb., neither of 

 which occurs in any of the Aden collections that I have examined. 



OrdoXLI. GKAMINE^E. 



Tribus Panice^. 



1. Trichol^na, Schrad. 



1. T. Teneriff^e (Parlat. in Webb, Phyt. Can. iii. 425). Caule basi 

 plus minus repente, ramoso, pubescente, demum adscendente, foliato, 

 nodis vaginisque tomentellis ; ligula pubescente, ciliata ; foliis margini- 

 bus involutis, abbreviatis, apice attenuatis, mucronato-acutis ; paniculis 

 laxis, nodis pilosis, spicis compositis ternatis, multifloris, pedicellis 

 ramosis, filiformibus, flexuosis, apice incrassatis ; spiculis solitariis, bi- 

 floris, sericeo-pilosis, pilis gluma duplo longioribus ; gluma exteriore 

 nulla, interioribus 2-nerviis, obtusis, dorso ciliatis; flore masculino uno, 

 palea binervis, apice obtusa, ciliato-dentata ; staminibus 3; stylis atte- 

 nuatis, apice barbatis ; achenio nigrescente. — Panicum Tenerijfee, R. 

 Br. in Prod. i. p. 39 ; Saccharum Tencriffa, Linn. fil. in Suppl. p. 106 ; 



