flp 



62 



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PLANT-^ WRIGHTIAN^ 



V. 



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A. NuTTALLiANus, DC. ,' Torr. 8r Gray, Fl. 1. i?. 334 ; var. pumilus, ca 



leguminibus breviusculis ut in /3. trichocarpo sed glaberrimis 



N 



"bus setaceis tubo companulato lon 



amplo (violaceo) subemarg 



leguminibus immaturis oblongo-linearibus subfalcatis glabris 10-spermis. — Sand- 

 bar in the Colorado near Austin, Texas ; April. (On ricli, Muskit soil, near water, 

 along the Santa Clara, 10 miles south of New Braunfels, April, 1850, Lindheimer.. 

 VexiUum beautifully purple-blue, as is the tip of the carina; the wings with 

 sulphur-yellow tips.) — A span to a foot high, with the leaves much as in the Amer- 

 ican A. Hyp/oglottis. Flowers half an inch long: the very slender calyxhalf the 

 length of the coroUa. Mature fruit not seen. 



•j- A. DisTORTUS (Torr. %■ Gray, Fl 1. p. 333): glabriusculus ; caulibus e radice 

 perenni plurimis adsurgentibus ; foliolis 5-12-jugis oblongis obovatisve s^pe retu- 

 sis ; stipulis triangulari-subulatis ; pedunculis folium superantibus ; spica brevi 10 - 

 20-flora; floribus mox decur\ds; calycis campanulati dentibus subulatis tubo sub- 

 duplo brevioribus ; vexillo apice emarginato-bilobo ; leguminibus oblongis turgidis 



i 



cliaracter), is a larger plant, with more numerous and usually rounder leaflets, pale flowers (white or 



Ochroleuco 



pointless legumes, which are over an inch in diameter. These, like the ovary, are perfectly glabrous. (I 

 know not what is represented by fig. 6 and 7 in De Candolle's plate cited above, nor do I fi^nd any refer- 

 ence to them in the text.) No. 597, Pl Lindh, 2, p. 176, 1 must now refer (at least as to the specimen 



before in the Hookerian herbarium) to 



A. pLATTENsis, Nutt. m Torr. ^ Gray, FL l c. This is a more hirsute plant than either of the pre- 

 ceding (the young leaves, &c., quite villous), from which it is well distinguished by its larger flowers (an 



of the calyx^ and the pxibescent (ovate, acuminate) legu 



To this 



species belongs Geyer^s No. 128, from the Kanzas River, referred by Ilooker (in Lond. Jour. BoU 6. jp> 

 210) to A. caryocarpus: also what I had referred to A, Mexicanus (No. 597) in Ph Lindheimeriance^ as 

 just mentioned. The specimens are not in fruit, but the ovary is pubescent (while in the preccding it is 



with Nuttairs original speciraens. 



hairy foliage, &c 



adnate 



tuse leaflets, and thin-walled pods. 



A. HTOiiLis, Geyer in Hooh Lond, Jour, Bot. 6. p. 211 (non Bieb.)^ of which the fruit only is 

 known, does not belong to this group, although it has a thick-walled pod. The pod is not two-celled, 

 the dorsal suture being only moderately inflexed. It is an acaulescent species, allied to A. cyaneus, if it 

 really belongs to this genus, and not to Oxytropis. 



« 



Mexico; colL of 1851. — Plant 2 to 5 inches higli, sleiider; the peduncles 2 - 3- 



flowered ; the legumes varying from a quarter to half an inch long. No. 1d6, Pl. ., 



Feiidl, is nearly the same plant. Although the pods are smooth, it is nearer relat- 



ed to the var. trichocarpus than to the original A. Nuttallianus. — Alhed to this 



species and to A. distortus, hut with larger flowers than either, is an Astragalus, 



which I have formerly received from Mr. Wright, and recently from Lmdheimer, 



under the name of 



A. LiNDHEiMERi {Engelm. ined.) : glabriusculus ; caulibus e radice annua plu- 

 riniis adsurgentibus ; foliolis T-8-jugis anguste oblongis emarginatis; stipuhs e 

 basi lata scariosa subulato-acuminatis ; pedunculis foUum paulo superantibus 6 - 12- 

 floris ; floribus approximatis ; bracteis subulatis pedicello longioribus ; calycis denti- 





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