92 Contributions from the Gray Herbarium 



Wright 1907 is peculiar in its few whorls (about 5) of small leaves, 

 and long simple or subsimple nearly naked stein (2.7-3.2 dm. tall), 

 but shows do technical characters of any importance, and has the 

 glandular stem characteristic of P. glochidiata. The type of P. 

 uncinatn C. Wr. lias not been seen, but from description it seems 

 scarcely different from Wright L907. 



Ser. 8. Trichospermae Chod. Slender annuals with alternate 

 leaves or the lowest whorled or opposite; capsule elliptic to ovate- 

 oblong, bearing concpicuous dorsal glands; seed conic, long-pilose, 

 the hairs forming a coma at its base. Polygala sect. Orthopoly- 

 gala subsect. I. D. Trichospermae Chod. Monog. ii. 170 (1893). 



a. Capsule much longer than wings, b. 



b. Steins densely pedicellate-glandular 114. P. Berlandieri. 



b. Stems glabrous 115. P. brachyptera. 



a. Capsule shorter than wings, c. 



c. Wings strongly cuspidate 116. P. longicaulis. 



c. Wings not or only slightly cuspidate, d. 



d. Keel scarcely equalling wings; wings obtuse 118. P. variabilis. 



d. Keel \ longer than wings; wings slightly mucronate ..117. P. exserta. 



114. P. Berlandieri Wats. Slender annual, generally freely 

 branched, 7-17 cm. tall, the stem and branches terete, densely 

 pedicellate-glandular. Leaves verticillate or subverticillate in 4's 

 or 5's toward base but mostly alternate, linear,- acute to acuminate 

 at each end, cuspidate, sparsely glandular along the midrib and 

 slightly revolute margin or subglabrous, 5-19 mm. long, 0.5-1.5 

 mm. wide, on petioles 0.5 mm. long. Racemes rather loosely 

 flowered, becoming 3-5 cm. long, on peduncles 1 cm. long or less; 

 pedicels 0.8-0.9 mm. long. Flowers white or pinkish, 2.1-2.5 mm. 

 long. Upper sepal orbicular-ovate, acutish, with two indistinct 

 longitudinal glands on back, 1.2 mm. long; lower sepals ovate- 

 oblong, obtuse, 1.1 mm. long, with two oblong glands on back. 

 Wings spatulate-obovate, rounded at apex, 3-nerved, 2.3 mm. long, 

 1.1 mm. wide. Keel 2.3 mm. long, the crest of 2 pairs of lobes, 

 the posterior oblong, rounded, adnate to keel, the anterior longer, 

 linear. Upper petals obliquely ovate, truncate or emarginulate at 

 apex, equalling keel. Capsule narrowly elliptic, 3.3 mm. long, 1.2" 

 mm. wide. Seed (including coma) 2.5 mm. long, silky-appressed- 

 pubescent. Aril 0.5 mm. long. Wats.! Proc. Am. Acad. xxi. 416 

 (1886); Chod. Monog. ii. 174. t. 21. f. 29-30 (1893), excl. var. 

 bogotensis. Lower California : Sierra de San Francisquito, 18 

 Oct. 1890, Brandegee 20 (G); El Taste, 12 Sept. 1893, Brandegee 



