380 
FLORA OF ADEN. 
denticulate scabrous awns. Upper palea very short, several times shorter 
than the lower one, included, ovate, obtuse, membranous. Stamens 3, 
erect, as long as the upper palea ; anthers linear-oblong. Styles filiform, 
short ; stigmas fibrillose, scarcely exceeding the stamens. Ovary ovate- 
oblong. 
Locality : — Crater of Shum Shum Range (Defl.). 
Distribution : — Nubia, Abyssinia, Central and S. Arabia, Morocco, 
3, Aristida brachypoda Tausch in Flora 1836, p. 506; Boiss. FI. Or. 
V, 495. K. Krause in Engl. Bot. Jarhrb, XXX Y, ’23 ; Post FI. Syr. 
Palest, and Sinai 860. 
Description : — Csespitose, 6-8 inches high. Leaves narrow-convolute, 
filiform, acute ; culms erect or ascendent, often ramose in the lower 
part ; sheaths glabrous ; ligule reduced to a setaceous ring. 
Panicle narrow, racemiform; glumes glabrous, narrowly linear- 
lanceolate, obtuse-acuminate ; the upper one longer ; callus long, hirsute, 
stipitiform ; awn articulate, 1J inches long. “ Arista infra genu 
brevissima recta nuda, seta media tertia vel dimidia parte inferiore 
rarius a basi nuda superne patule plumosa, setis lateralibus tenuiter 
capillaribus nudis intermedia dimidio vel tertia parte brevioribus ejus 
parte nuda longioribus ” Boiss. 
Locality : — Little Aden, on the Jebel Ishan (Defl.). 
Distribution : — Upper Egypt, Sinai, S. Arabia. 
Note : — “ Yalde affinis facie A. plumosae a qua vaginis glabris, 
aristse parte infra genu sita breviore setisque lateralibus magis elongate 
fere tautum differt. An illae notae sat firm® ? ” Boiss. l.c. 
■-T' 
4. Aristida paradisea Edgew. in Journ. As. Soc. Beng. XYI (1847), 
11, 1219. 
Arthratherum caloptilum Jaub. et Spach 111. PI. Or. IV, t. 336. 
Aristida sericea Ehrenb. Mss. ex Boiss. 
Aristida caloptiia Boiss. FI. Or. V, 497 ; K. Krause in Engl. Bot. 
Jahrb. XXXY, 23. 
Description Almost 1 foot high, csespitose. Leaves narrowly 
convolute, filiform, flexuose, acute ; culms erect, glabrous, ramose at 
the base ; sheaths glabrous. 
Panicle erect, contracted, slightly lax, exserted from the uppermost 
sheath 5 glumes lanceolate, obtuse, attenuate-acuminate, the lower one 
longer ; palea with a short long-plumose callus, much shorter than the 
glumes, with an articulate awn. “ Arista longa infra genu elongata 
torta glabra, setis lateralibus tenuiter subulatis glabris intermedia ex 
toto plumosa triplo brevioribus.” 
Fruits : — November and March (Schweinf.). 
