362 J ALBERT ET E. SPA€H. 



oblongo-lanceolatis, apice sensim angustatis subulato-aristulatis 

 v. mucronatis (simul ac florum palea externa), latere exteriori 

 enerviis v. obsolète uni-nerviis. — Crescit yEgypto, Arabia Pe- 

 traea, Syria, Mesopotamia, Persia, Media, Albania et Iberia. — 

 Planta forsan haud immerito pro Eremopyri orienlalis varietate 

 habenda. 



CR1THOPSIS, Nob. 



Spicul^e conformes, geminae, distichae, imbricatae , arcte ses- 

 siles, biflorai; latérales rhacheos respectu transverse posita; ; ter- 

 minales rhachi parallelae. Flos ïNFÈttiOR subsessilis, bipaleaceus, 

 hermaphroditus, triandrus. Flos sul-eriou longe stipitatus, uni- 

 paleaceus, neuter Gi.uma cujusve paris spicularum quadrivalvis, 

 involucrum uniseriale flores circumcingens sistens. Valv.e eu m 

 rhachi continuée, persistentes, subcoriaceai, verticillatae, planius- 

 cula?, aequales, eequilaterae, trinerviae (nervis lateralibus haud raro 

 plus minusve obliteratis), subascendentes, lanceolato -lineares, 

 apice aristato-subulatae , basibus concret®. Glumella flokum 

 pekfectokum bipaleacea ; paleis asquilateris, dissimilibus. Palea 

 extekna subcoriacea, quinquenervia (nervis infra médium tener- 

 rime filiformibus, superne incrassatis convergentibus, apice con- 

 fluentibus), concava, ecarinata, involuta , oblongo-lanceolata , 

 sensim acuminata, apice in aristam elongatam subulatam pro- 

 ducta. Palea imerna minor, membranacea, hyalina, carinato- 

 binervia (carinis dorso obtusis immarginatis), oblonga, truncata, 

 mutica , dorso convoluta indeque a nervis inilexa. Squamul^ 

 HYPOGYiNiE et oiu;a,\a sexualia Hordeacearum. (Caryopsis non 

 suppedit.) 



Planta annua, subcaespitosa ; radice fibrosa. Gaules simplicis- 

 simi, monostachyi, inferne geniculati. Folia plana. Spica brevis, 

 densissima, stricta, sublanceolata, contrarie compressa, e spicu- 

 larumfasciculis 5-9 composita. Riiachis compressa, crassa,arti- 

 culata, fragilis ; internodia abbreviata, spathulato-oblonga, dorso 

 convexa, facie plana, marginibus et circum spiculas setis elon- 

 gatis albidis dense barbata. 



Geuus ab Elymo, cui proximum , glumaruni dispositione ver- 



