362 NORTH AMERICAN FLORA [Volume 25 



156. Polygala variabilis H.B.K. Nov. 

 Gen. &Sp. 5: 397. 1823. 



Polygala Nelsonii Rose, Contr. U. S. Nat. Herb. 10: 122. 1906. 

 Polygala variabilis typica Blake, Contr. Gray Herb. 47: 96. 1916. 

 Polygala variabilis leucanthema Blake, Contr. Gray Herb. 47: 96. 1916. 



Slender erect annual, sparsely branched, 1.7-6 dm. high, the stem obscurely pedicellate- 

 glandular especially below; leaves alternate, linear, 3.5-9 mm. long, 0.4-0.7 mm. wide, cuspid- 

 ulate, revolute; racemes conic-capitate, rather dense, 3-7 mm. long, 7 mm. thick, the axis 

 becoming 1.5-7 cm. long; pedicels 0.6-0.8 mm. long; flowers purplish or white; sepals ovate, 

 rounded to obtuse, 1-1.9 mm. long; wings elliptic, 2.7-3.6 mm. long, 1.4-2.1 mm. wide, rounded 

 or rarely bluntly mucronulate, cuneate at base, 3-nerved; keel 2.7-3.6 mm. long, the crest 

 on each side of 3-4 entire or forked lobes; capsule ovate-oblong, 2.6-3.2 mm. long, 1.2-1.3 mm. 

 wide; seed obconic, silky-comose, 2.7 mm. long (including coma); aril 2-lobed, 0.5 mm. high, 

 appressed. 



Type locality: Near Maypures, Colombia. 

 Distribution: Veracruz to Honduras; also in South America. 



Illustrations: H.B.K. Nov. Gen. & Sp. pi. 509; Mem. Soc. Phvs. Geneve 31(2) ! : pi. 21, 

 f. 37, 38; Contr. U. S. Nat. Herb. 10: pi. 38 ; Contr. Gray Herb. 47: pi. 2, f. 72, 72a. 



157. Polygala longiloba Blake, sp. nov. 



Slender erect branching annual, 9-13 cm. high, obscurely papillose-glandular below; leaves 

 alternate except for one or two pairs at base of stem, linear, 6-14 mm. long, 0.5-0.9 mm. wide, 

 subulate-mucronate, flattened; peduncles 1-2 cm. long; racemes subcapitate, dense, 7-8 mm. 

 thick, the axis 1-1.8 cm. long; bracts ovate, deciduous, 0.8 mm. long; pedicels 0.7 mm. long; 

 flowers whitish cream-colored ; upper sepal ovate, obtuse, glabrous, 1 .8 mm. long, the lower lance- 

 elliptic, 1.3 mm. long; wings spatulate-obovate to elliptic-obovate, 3.1-3.4 mm. long, 1.1-1.4 

 mm. wide, obtuse to rounded and subapiculate, glabrous, 4-5-nerved; keel 3 mm. long, the 

 crest on each side of a cuneate-flabellate lamella and an entire or bilobed elliptic lobe; capsule 

 elliptic, gland-dotted along septum, 3.2 mm. long, 1.5 mm. wide; seed obconic, silky-pilose, 

 2.8 mm. long (including coma); aril 1.2-1.3 mm. long, the 2 lobes linear, appressed. 



Type collected at Santa Eugenia, Oaxaca, Mexico, altitude 150 meters, July 18, 1895, E. W, 

 Nelson 2841a (U. S. Nat. Herb. no. 229236). 



158. Polygala perennis Blake, sp. nov. 



Root perennial, vertical, 1.5-5 mm. thick; stems few, slender, erect, simple or sparsely 

 branched, glandular-papillose in the grooves, about 12 cm. high; leaves alternate, linear, 5-8 

 mm. long, 0.8 mm. wide, subulate-tipped, thickish ; peduncles 8— IS mm. long; racemes sub- 

 capitate, dense, obtuse or acute, 10 mm. thick, the axis becoming 3.5 cm. long; bracts oval, 

 obtuse, pinkish, deciduous, 1.7 mm. long; pedicels 0.7-1 mm. long; flowers pink; sepals oval 

 to elliptic-oblong, obtusely apiculate, glabrous, 1.5-3 mm. long; wings obovate-oval, 4.8-5.5 

 mm. long, 2.3-2.8 mm. wide, rounded, short-cuneate at base, glabrous, 7-nerved; keel 4.2-5.2 

 mm. long, the crest of 5-6 lobes on each side; capsule oval-ovate, gland-bearing along septum, 

 3 mm. long, 2 mm. wide; seed obconic, silky-comose, 2. 6 mm. long (including coma); aril 0.7 

 mm. long, the 2 linear-elliptic lobes appressed. 



Type collected at Rincon Antonio, Oaxaca, Mexico, April 21, 1910, C. R. Orcull 3264 (U. S. 

 Nat. Herb. no. 464991). 



159. Polygala nana (Michx.) DC. Prodr. 1: 328. 1824. 



Polygala lulea nana Michx. Fl. Bor. Am. 2: 54. 1803. 



Polygala hyemalis Raf. New Fl. 4: 89. 1838. 



Pilostaxis hyemalis Raf. New Fl. 4: 89, as synonym. 1838. 



Pilostaxis nana Raf. New Fl. 4: 89, as synonym. 1838. 



}Polygala lulea paucifolia Raf. New Fl. 4: 90. 1838. 



Polvgala nana humillima Chod. Mem. Soc. Phys. Geneve 31(2) J : 200. 1893. 



Polygala arenicola Small, Bull. N. Y. Bot. Gard. 3: 426. 1905. Not P. arenicola Giirke, 1903. 



Stems several from an annual or biennial root, simple, erect or ascending, 7-17.5 cm. high; 

 basal leaves tufted, spatulate to obovate or elliptic-obovate, 1.5-4.3 cm. long, 3-17.5 mm. wide, 



