1919] Brandcgee: Plantae Mcxicanae Purpusianae 499 



This plant is very distinct from the Alta California species and 

 resembles some of the ]\Iexican forms. A slight pubescence can be 

 found on the petioles and petiolules which are armed with numerous 

 stout recurved spines. Collected on the Sici-ra dc la Laguna of the 

 Cape Region of Baja California by T. S. Brandegee, where it is not 

 found in abundance. Type, Herb. Univ. Calif. No. 114643. 



Indigofera Purpusii, sji. nov. 



Suffrutescens ei-ecta : caule pubcsctniti plus (|uam 5 dm. alto: foliis 

 ca. 1 dm. longis; foliolis ca. 30, oblongis a])ic'e obtusis nuieronulatis, 

 basi rotundatis vel cuneatis, utrinque pilis adpi-essis instructis, ca. 

 1.5 cm. longis, 5 mm. latis; stipulis setaceis basi ampliatis: inflores- 

 centia ferrugineo-pubcseenti multiflora ; racemis 5-10 cm. longis; 

 calycis dentibus bi-eviter lateque deltoideis ; vexillo ca. 7 mm. longo, 

 alls glabris, staminibus ca. 7 mm. longis ; legumine inunaturo arcuato 

 reflexo, longe acuminato ferrugiiieo-pubescenti, ca. 10-spermo. 



Collected on rocks in Barranca de Tenampa, Vera Cruz. No. 8167. 

 Type, Herb. Univ. Calif. No. 200645. 



HESPEROTHAMNUS, gen. nov. Leguminosarum 



Calycis lobi inaequilongi, 2 superiores connati ; petala subaequi- 

 longa, unguiculata; vexillum orbiculatum; alae oblongae, falcatae, 

 liberae ; carina incurva, o])tusa. Stamen vexillare demum liberum, 

 cetera in vaginam eonnata ; antherae uniformes. Ovarium pubescens, 

 sessile, multi-ovulatum ; stylus incurvus, subulatus, imberbis, stigmate 

 parvo terminali. Legumen oblongum, plano-compressum. 2-valve, 

 valvis eoriaceis. Seiniua orbiculata, estrophiolata, funieulo lato, radi- 

 cula curvata, longa. cotyhnlonibus foliaceis aceumbente. Frutex. 

 Folia impai'ipinnata, foliolis integerrimis. Flores violacei in racemos 

 terminales dispositi. 



Hesperothamnus littoralis, noiii. nov. 

 Lonchocarpiis littoralis, Brandg. Zoe, vol. 5, p. 157. This species 

 is found in canons along the west side of the Cape Region of Baja 

 California. In Ihe description of Lonchocarpns littoralis the legume 

 is incorrectly described as indehiscent. Additional collections show 

 that it finally separates into two valves, which become somewhat con- 

 torted. The leaves and legume suggest Brongniartia, but the terminal 

 racemes, the estrophiolate seed and long accumbent radicle do not 

 belong to that genus. Type, Herb. Univ. Calif. No. 83370. 



