32 Contributions from the Gray Herbarium 



violacei. Sepala lanceolate acuminata sparse patenti-pilosula 2.8 

 nun. longa. AJae ovales basi breviter unguiculatac ciliolatae medio 

 dorsi Bparsissime puberulae 4.8-5 mm. longae 3 mm. latae. Carina 

 5 mm. Longa. Petals Buperiora obovata 4 mm. longa. Capsula 

 oblongc-elliptica apicem versus paullulum angustata emarginata 

 Bubsparse el brevissime patenti-puberula et ciliolata 10 mm. longa 

 6.5 mm. lata. Semen 4.7 mm. longum pilosum. Arillus 2.4 mm. 

 altue palliiformia marginelato scarioso lobulato in lobos laterales et 

 dorsalem dob diviso. Arizona: foothills of the Santa Rita Mts., 

 April-July 1884, Pringle p, p. (type: K). 



33. P. oaxacana Chod. Stems few, woody at base, from a 

 woody root, simple or slightly branched at base, barely puberulous 

 above, about 2 dm. long. Leaves linear, acute at base and apex, 

 mucronate, glabrescent, the larger 26-35 mm. long, 2.5-3 mm. 

 broad. Racemes 3-5-flowered, 3 cm. long, the rachis curved; pedi- 

 cels 4-4.5 mm. long. Flowers 6-7 mm. long. Sepals lanceolate, 

 ciliate, many-nerved, the upper 1/3 longer. Keel somewhat 3- 

 lobed, the limb noticeably shorter than the claw. Wings elliptic, 

 slightly oblique at base, short-clawed, ciliate, reticulate-nerved, a 

 little longer than broad. Upper petals sublinear, somewhat con- 

 stricted above the middle, subacute. Filaments long-hirsute. 

 Ovary obovate, shortly and densely pilose. Chod. Bot. Jahrb. lii. 

 Beibl. 115. 73 (193), as P. oaxacanum. Based by Chodat on 

 Seler 86, from San Juan del Estado, Etla, Oaxaca. Not seen; de- 

 scription compiled. 



34. P. Lozani Rose. E basi fruticulosa pluricaulis caulibus 

 infra ramosis ad 1 dm. altis ut ramis curvato-adscendentibus sub- 

 canescentibus pilis densis incurvis. Folia caulina inferiora ovalia 

 mucronata utrimque rotundata subsparse incurvo-pubescentia 11 

 mm. longa 6 mm. lata vel minora, superiora oblonga vel anguste 

 oblonga mucronata utrimque acutiuscula 10-13 mm. longa 1.8-3.5 

 mm. lata, ea ramorum similia sed minora. Racemi breves 1-1.5 

 cm. longi 3-4-flori. Flores luteo-viridescentes. Bracteae minutae 

 subulatae persistentes. Sepala lanceolata acuminata incurvo-pu- 

 berula 3-3.5 mm. longa, superius longius subpersistens. Alae ovales 

 abrupte acutae basi cuneatae ad apicem sparse incurvo-puberulae 

 5-5.5 mm. longae 2.5-3.5 mm. latae. Carina alas subaequans. 

 Capsula ovalis vallecula angusta juventate subsparse incurvo- 

 pubescens maturitate ciliolata in lateribus sparsissime pubescens 



