1847-] A couple of hours' Herhorization at Aden. 1219 



conicis compressis undulatis acutis testa punctulata olivacea. Herba, 

 1-2-pedalis. 



This species differs from all I know in its combined styles, and in 

 the very peculiar form of the seed, which is difficult to describe, some- 

 what resembling a common wooden chess pawn much compressed. 



Euphorbia fruticosa. — Frutex ramosa erecta, ramis ramulis- 

 que lignosis siccis, angulatis puberulis, foliis subsessilibus obcuneatis 

 retusis emarginatisve integerrimis pubescentibus, capitulis solitariis in 

 apicem ramulorum sessilibus OO-floris $ numerosis $ nnico toro 

 clavato tomentoso. 



This differs from all I am acquainted with in the hard woody tex- 

 ture of the branches, not spongy as in the other frutescent species. I 

 did not see any ripe fruit. The branches are compressed somewhat 

 as if pinched into their present shape. Beside these species there was 

 a fleshy leafless thorny frutescent one like E. antiquorum, not in flower. 



Gramina. 



Aristida — (Sub-genus Stipagrostis) Paradisea, glabra, nodis gla- 

 bris,vaginis arete amplexi — caulibus striatis ore pauce barbato ligula cilia- 

 to — pilosa, lamina subulata convoluta, panicula strictiuscula, (1-2-pe- 

 dali,) glumis glabris membranaceis acuminatis flore plus duplo lono-iori- 

 bus (inferiore 8 lin: superiore 6 lin: longo)palea exteriore arete convoluta, 

 apice integro articulatim aristata, arista basi torta, 3 partita, ramis late- 

 ralibus brevibus setaceis medio longissimo plumoso basim versus nudi- 

 usculo. (3-4-pollicari, 6-9 lin :) palea interiore breviore ovata apice 

 3-dentata, lodiculis 2 hyalinis lanceolatis acutis, semine cylindraceo, 

 callo pilis albis barbato obconico ; stylis brevibus crebre plumosis. 



I have named this paradisea from its resemblance to a plume of the 

 bird of Paradise, not from its growing at Aden. It approaches A. 

 ciliata and A. lanata, but differs in its smooth joints from the former, 

 and smooth culms, &c. from the latter, and from both in the propor- 

 tions of the awn, as given in Trinius and Ruprecht's elaborate exposi- 

 tion of the Stipacese in the memoirs of the Petersburg academy, 1843. 



Saccharum ? dissitifloram, puberulum, ligula ciliato — barbata, pani- 

 cula patente locustis omnibus pedicellatis solitariis, sericeo-pilosis, 

 muticis. 



Gramen tenerum 1-2-pedale, culmis tentibus, vaginisque striatis, pube- 

 rulis, nodis pubescentibus, ligula ciliato — barbata folio supra piloso subtus 



