Part 5, 1924] POLYGALACEAE 343 



gin, 6-7 mm. long, 4.5 mm. wide; seed ellipsoid, short-pilose, curved-rostrate at base, 4.2 

 mm. long; aril attached to tip of beak, 1.3-1.8 mm. long, the 2 cuneate-obovate scarious 

 lobes appressed. 



Type locality: Silver City, Nevada. 



Distribution: Western Colorado to western Nevada, and southward to northern New Mexico 

 and northern Arizona. 



Illustration: Mem. Soc. Phys. Geneve 31(2) 2 : pi. 18, J. 16-17. 



98. Polygala acanthoclada A. Gray, Proc. Am. 

 Acad. 11: 73. 1876. 



Stems intricately divergent-branched, 1.2-9 dm. high, densely and usually canescently 

 spreading-pilosulous, in age subglabrate, the branchlets indurate and spiny-tipped; leaves 

 spatulate or linear-spatulate, 6-17 mm. long, 1-2.5 mm. wide, rounded or obtuse, coriaceous, 

 reticulate-venose, ciliolate and spreading-puberulous ; racemes terminating branchlets or 

 axillary, loosely 3-4-flowered, 2-10 mm. long, the axis usually spiny-tipped; bracts subulate 

 to elliptic, 1.5-3 mm. long; pedicels pilosulous or glabrous, 3.3-5 mm. long; flowers yellowish, 

 the upper petals sometimes purplish-tipped; sepals ovate, spreading-puberulous, 2-3.2 mm. 

 long; wings obovate or oval, rounded, obscurely mucronulate, rounded at base, glabrous, 3.8-5 

 mm. long, 2.5-3 mm. wide; keel not beaked, merely bluntly convex below apex, subtruncate, 

 glabrous, 3.3-3.5 mm. long; capsule oval, 4.5-4.8 mm. long; seed sparsely pilose, with short 

 curved rostrum, 3.8 mm. long; aril attached to apex of beak, 1 mm. long, the 2 cuneate-obovate 

 lobes scarious, appressed. 



Type locality: San Juan Valley, Colorado. 



Distribution: Southwestern Colorado to southwestern Nevada, San Bernardino County, Cali- 

 fornia, and northern Arizona. 



Illustration: Mem. Soe. Phys. Geneve 31(2) 2 : pi. lS.f. 18-20. 



Polygala acanthoclada intrlcata Eastw. Proc. Calif. Acad. II. 6: 283. 1896. Stems and 

 branches densely canescent-tomentose with incurved or reflexed matted hairs; leaves sparsely 

 puberulous with incurved hairs; pedicels glabrous; sepals glabrous. Utah. 



99. Polygala nitida Brand. Univ. Calif. Publ. 

 Bot. 4: 272. 1912. 



Fruticulose, branching, decumbent, finely incurved-puberulous, 9-20 cm. long; lower 

 leaves elliptic to oval, 1-2 cm. long, 7.5-12.5 mm. wide, cuspidate at the rounded apex, cuneate- 

 rounded at base, reticulate, shining, glabrous or sparsely puberulous on costa beneath; the 

 upper more oblong or obovate-oblong, 11-15 mm. long, 4-5 mm. wide; racemes 3-9-flowered, 

 1.5-3.5 cm. long, slightly geniculate; bracts persistent, lance-subulate, minute; flowers rose- 

 colored; upper sepal ovate, ciliolate, persistent, 3 mm. long; lower sepals oblong, 2.6 mm. long; 

 wings rose-colored, oblong-obovate, 5.5 mm. long, 3.3 mm. wide, acutish at the mucronulate 

 apex, cuneate at base, glabrous; keel yellowish, 5.5 mm. long, the blunt slightly descending 

 beak 1.5 mm. long; capsule oval, subretieulate'striate, sparsely puberulous, 4 mm. long, 2.7 

 mm. wide; seed pilosulous, 3 mm. long; aril 1.9-2.1 mm. deep, the small corneous umbo 

 appressed, glabrous, the 2 corneous-scarious lobes narrowly oblong-obovate, rounded at apex, 

 1.8 mm. long. 



Type locality: Bagre, Minas de San Rafael, San Luis Potosi. 

 Distribution: Known only from the type locality. 

 Illustration: Contr. Gray Herb. 47: pi. 2,f. 49. 



100. Polygala eucosma Blake, Contr. Gray 

 Herb. 47: 72. 1916. 



Fruticulose, many-stemmed, procumbent, 4.5-20 cm. long or more, very leafy, minutely 

 incurved-puberulous; leaves oval or elliptic, 4-9 mm. long, 2-6.5 mm. wide, acute or obtuse, 

 cuneate at base, coriaceous, scarcely reticulate, glabrous or very sparsely incurved-puberulous; 

 racemes 2-3-flowered, about 7 mm. long; pedicels glabrous, 0.8-1.8 mm. long; flowers rosy; 

 upper sepal ovate, ciliolate, 2-2.8 mm. long; lower sepals elliptic, glabrous or ciliolate, 1.3-2.5 

 mm. long; wings obovate, 4-4.5 mm. long, 1.8-2.8 mm. wide, mucronulate or retuse at the 

 obtuse or truncate apex, cuneate at base, glabrous; keel ciliolate above on the saccate portion, 



