850 CONTEIBUTIONS FROM THE IS^ATIONAL HEKBAKIUM. 



14. PARRYELLA Torr. & Gray. 



Low niucli branched shrub with alternate glandular-dotted many-foliolate odd- 

 pinnate leaves and terminal compound spikes of very small, dull yellowish-green 

 flowers; calyx 5-toothed, with very short teeth; petals wanting; fruit a short, very 

 glandular, 1-seeded pod. 



1. Parryella filifolia Torr. & Gray, Proc. Amer. Acad. 7: 397. 1867. 



Type locality: Along the Rio Grande below Albuquerque, New Mexico. Type 

 collected by Parry. 



Range : New Mexico and Arizona. 



New Mexico: Zuni Reservation; RioPuerco; Black Rock; Belen; south of Fruit- 

 land; Shiprock. Sand hills, in the Upper Sonoran Zone. 



15. PAROSELA Cav. 



Annuals or perennials with herbaceous or woody stems 60 cm. high or less; leaves 

 mostly odd-pinnate, in one species palmately trif oliolate ; flowers small, in crowded 

 terminal spikes, bracteate; leaflets usually small, 1 to 20 pairs, mostly glandular- 

 punctate; petals 5, 4 attached to the column of the monadelphous stamens, the ban- 

 ner free; stamens 9 or 10; pods 1 or 2-8eeded, usually indehiscent, included in the 

 persistent calyx. 



key to the species. 



Calyx deeply lobed, the lobes broadly lanceolate, foliaceous 1. P. calycosa. 



Calyx not deeply lobed, the teeth setaceous or subulate or short- 

 triangular. 

 Calyx glabrous, at least outside, short-pubescent on the mar- 

 gins of the teeth or in the throat; calyx lobes short. 



Annual; bracts inconspicuous 7. P. urceolata. 



Perennials; bracts conspicuous. 



Stems prostrate, herbaceous 17 . P. glaherrima. 



Stems erect, more or less woody 2. P. fnitescens. 



Calyx variously pubescent, the lobes mostly setaceous or 

 subulate. 

 Plants glabrous, except the inflorescence; annuals or 

 perennials. 



Stems woody; low shrub 3. P.formosa. 



Stems herbaceous, woody at the base in one or two 

 species. 

 Perennials, from a thick woody base. 



Bracts sericeous, sparingly glandular; leaf- 

 lets numerous 11 . P. grayi. 



Bracts glandular, the margins hyaline; leaf- 

 lets 5 or 6 pairs. 

 Spikes lax; corolla yellow ; stamens 9.. 4. P. enneandra. 

 Spikes crowded; corolla purple; sta- 

 mens 10 5. P. pogonanthira. 



Annuals; stems slender, mostly erect. 



Leaflets very numerous; spikes elongated; 

 plants generally more than 30 cm. 



high 6. P. dalea. 



Leaflets 5 or 6 pairs; spikes short, almost 

 capitate; plants generally less than 

 30 cm. high. 



