Blake Revision of Poly gala 21 



pilosulous, 5 mm. long, 4.2 mm. wide. Seed 3.5 mm. long. Aril 

 minute, 0.5 mm. long, with obsolescent barely lobulate scarious 

 margin and large pubescent umbo. P. puberula Gray var. ovalis 

 Rob. & Greenm.! Proc. Am. Acad. xxix. 382 (1894); not P. ovalis 

 E. Mey. in Drege, Zwei Pfl. Doc. (Flora xxvi. Beig.) 45, 212 (1843), 

 nomen. Jalisco: damp hollows of hills near Guadalajara, 18 

 July 1893, Pringle 4472 (type coll.: BGK). T. 1. Fig. 9. 



The date of collection of the type collection was originally re- 

 corded as 22 May, and is given on the labels as 17 July, but Prof. 

 G. P. Burns, who has kindly consulted for me the Pringle field 

 books, writes that the correct date is 18 July. 



18. P. Xanti Gray. Similar in habit to P. buxifolia, the 

 branches procumbent or erectish, about 13 cm. long, densely pu- 

 bescent with spreading-incurved hairs. Leaves oval, rounded at 

 apex and base, with 1-2 pairs of lateral nerves, not reticulate, 

 densely pubescent both sides w T ith short incurved-spreading hairs, 

 9-13 mm. long, 5-8.5 mm. wide, on petioles 1 mm. long. Racemes 

 1.8-3 cm. long. Flowers " white, tinged with yellow and purple," 

 6-6.5 mm. long. Wings venose, somewhat rhombic-oval, rounded 

 at apex, pilose except near margin with short incurved-spreading 

 hairs, 5.5 mm. long. Capsule elliptic-ovate, notched at apex, 

 rounded at base, densely pubescent like stem, 7 mm. long, 4.3 mm. 

 wide, on a distinct stipe about 0.8 mm. long. Seed not seen. 

 Gray! Proc. Am. Acad. v. 153 (1861-62); P. Xanthi Chod. 

 Monog. ii. 18. t. 15. f. 43-45. (1893). Lower California: Cape 

 San Lucas, 1859-60, XantusS (type coll.: GK). Brandegee 21, 

 Todos Santos, 21 Jan. 1890, distributed as P. Xanti is not this 

 species, but the material in the Gray Herbarium is too imperfect 

 for determination. 



19. P. serpens, sp. nov. Suffruticulosa multicaulis. Caules 

 procumbentes plus minusve flexuosi ramosi 8-30 cm. longi tenues 

 subdense incurvo-puberuli. Folia ovata acuminata basi rotundata 

 tenuia nervis lateralibus 3-4-jugis non reticulatis supra obscure 

 viridia subsparse pubescentia pilis longiusculis incurvo-patentibus 

 subtus vix pallidiora subdense incurvo-puberula pilis paucis longiori- 

 bus intermixtis 1.5-2.8 cm. longa 8-13 mm. lata, in petiolis incurvo- 

 puberulis 1-1.5 mm. longis. Racemi subflexuosi laxiflori 2-2.5 cm. 

 longi. Flores 5-12 ut videtur ochroleuci. Sepala lanceolata acu- 

 minata ciliolata et sparse puberula plus minusve curvata 2.6 mm. 



