60 



PLANTiE WKIGHTIAN.^. 



V. 



Alg 



Torr. §• Grav, Fl 1. p. 399 



Plams of Western 



Texas. « A tree, from 20 to 30 feet high ; the trunk 12 or 18 inches in diameter 



In foliage at least onr plant seems unlike Prosop 



dulcis: but quite like P. sili- 



m (or P. juliflora), which 



is thought 



be a mere 



The structure of the pod is the same 



thr 



rariety of P. dulcis. 

 may be varieties of 



widcly distributed and polymorphous species, for which the name of juliflora 

 should be adopted. What I had once examined as an Algaroho pod (P/. Lindh. p. 

 35) was doubtless the legume of a Ceratonia. P. Limensis has the seeds inclosed 



scparate coriaceous investments, as in P. juliflora 



has P. fruticosa. It 



same in P. scricantha and P. humilis, only the pips are quadrate from mutual pres 



sure. Tn the former they are very thick and cartilag 

 liable to break up transversely into one-seeded artic 



nous : and the pod in both is 

 es. In P. torquata the seeds 

 are inclosed in similar, well-defined pips : so also in P. abbreviata, except that they 

 are thin, pointed at both ends, and elongated, so as to become spirally twisted with 

 the pod. Thcsc torquate species are therefore inseparable from Algarobia, except 



hile P. strombulifera, P. reptans, and the following species, 

 having continuous, even, and closely spiral legumes, are true Strombocarpas. 



mere 



156. S 



ROMBOCARPA PUBESCENS. S. brevifoUa, Nutt. in Herb. Hook. Prosop 

 (Strombocarpa) pubescens, Bentli. in Lond. Jour. Bot. 5. p. 82. — High pebbly pra 



, Z£>f^ J',3/4^ 



of Zacate Creek, July 



flower. Valley of 



Rio Grande 40 



50 



miles below El Paso, Sept. ; in fruit. Also gathered, in flower, in the collection of 



185 



6- 



North of the Jornada del Muerto, N. Mexico, Dr. Wisl 



Shrub 



feet high ; the erect spikes an inch or an inch and a half long, on rather 



long pcd 



y very 



the rhachis nearly glabrous, but the flowers silky-pubescent, and 



llous. The closely spiral cylindrical pods are from one to two 



inches long, and cinereous-pubescent when young. — The specific name of puhescens 



3. But 



well chosen, as the leaflets scarcely appear pubescent to the naked ej 

 it may prove to be only a small-leaved variety of Dr. Torrey's earlier-published 

 Prosopis odorata. The oblong leaflets, however, are barely half as long, about 

 three lines, and the pinnae only an inch 



& 



perslstentibus ; foliolis 3-4-jugi3 elliptico-oWongis glabellis nitidis coriaceis eximie reticulatis (3-4 lin. 

 longis); glandula petiolari turbinata ; pedunculo axillari vel supra-axillari pluribracteato 1-2-floris folio 

 jBquilongis ; sepalis membranaceis (aurantiacis) obtusis glabellis petalis obovatis aureis dimidio breviori- 

 bus ; legumine ignoto. 



of Monterey, Dr. Wislizenm 

 large, deep-yellow flowers. 



Northern Mexico, near Rinconada, Cerralvo, and Monterey, Dr. Gregg ; North 



A shrub, one or two feet hi^gh, with small leaves, and proportionally 



WlSLIZENI 



bijugis obovatis retusis mucronatis recte-venosis (3 lin. longis) ; petiolo eglanduloso in appendicem seta- 

 ceam producto ; stipulis subulato-setaceis ; pedunculis 3 - 5-floris ad apicem ramorura confertis corymboso- 



paniculatis; sepalis late ovalibus obtusissimis margine subscariosis undulatis petalis (flavis) obovato-rotun- 

 dts ter quaterve brevioribu^ ; legumine ignoto. ~ ' 



senus; Aug. 



Wisli 



Shrub 4 to 6 feet high ; the branches puberulent, vcry leafy to the top, and bearlncr a 

 coj-mb or panicle of copious and large flowers ; the petals almost an inch long. 



Berlandl.r'sNo.2013, mentioned under Prosopis reptans, in Hook. Jour. Bot. 4. p. 352, was most 

 p obably gafl.ered m Northem Mexico, not in Texas. It is doubfless the same as No. 492 of Gregg's 

 Mex.can coflection, which, I think, may be characterized as follovvs : 



