l'ersuch einer Monographie der Gattung Ephedra. 285 
dis, conniventibus, subconcavis, membranaceis, glabris, erectis, involucrum 
subiequantibus, staminum filamentis parum brevioribus. Stamina 3 — 5. 
filamentis in columnam tenuem apice incrassatam coalitis; antherae subro- 
tundae, biloculares, loculis poro transversali apice dehiscentibus; pollen ova- 
tum. flavum. Flores foeminei: Amenta ovoidea, sessilia, biflora.  Involucrum 
vel squamulac biseriales cruciatim dispositae, subliberae, media parte viridi 
lineari-lanceolata, marginibus late membranaceis subdenticulatis; squamulae 
a basi gradatim ad apicem latiores. Ovula bina ovato-acuminata, acute tri- 
gona, facie plana apposita; integumentum exterius (testa) apice apertum, 
tridentatum, crustaceum, laeve, glabrum, subfulvum; interius (tegmen) tenuis- 
simum, in colle longo apice aperto constrictum, integumentum exterius 
aequante; intimum (seu tercina Mirb.?) nucleus conicus, versus apicem ex- 
cavatus, cavitate obovata, embryonem obovoideum suspensum includente,.‘ 
Decais. |. c. 
Hab. in Aegypto inter Cairo et Suez, in desertis sabulosis (Bové), in de- 
sertis versus Suez et ad Sinain! (Bové, Decais.). Non vidi. 
1%. Ephedra lomatolepis Schrenk. 
Diagn. pl. novar., in Songaria lect. (1844). 
E. suffruticosa: ramis rectis tuberculatis: amentis foemineis subglobosis in 
apice peduneuli continui aggregatis sessilibus bifloris; involucri vaginis 
sub- 4 late membranaceo-mirginatis subbipartitis, intima flosculos ovatos 
obtusiuseulos aequante: tubilli elongati flexuosi tubo exserto longitn- 
dine limbum ligulatum (brevem) multoties excedente.—le. nostr. fig. VII. 
E. lomatolepis in Bullet. de la classe phys. math. de l'Acad. Imp. des 
scien de St. Pétersb. Tome I No 1# p. 210! 
A proxima E. alata distinguitur caule herbaceo vix ima basi suffrutes- 
cente, amentis foemineis in apice pedunculi, pseudo-nuculis haud icuminatis. 
potius obtusis. 
