18 Contributions from the Gray Herbarium 



tufted at base. Capsule membranous-herl >ace< us, equally 2-celled, 

 narrowly winged or margined. Seeds densely pubescent (very 

 rarely glabrous) , oblong-oval. Aril very varied, Bubenl ire or st rongly 

 lobed, appressed or spreading, with narrow or broad scarious 

 margin, with a corneous eubhemispheric or sometimes much re- 

 duced pubescent rarely glabrous umbo. Suffrutescent or herba- 

 ceous perennials, with small or medium usually purplish flowers in 

 terminal and axillary racemes, these often becoming apparently ex- 

 tra-axillary by the development of axillary branches. Polygala 

 L. sect. Hebecarpa Chod. Arch. Sci. Phys. Nat. Geneve xxv. 698 

 (1891); Monog. ii. 9 (1893), excl. Badiera DC. 



a. Sepals herbaceous, caducous like the wings (except in nos. 



15-16) ; aril pubescent at least at apex, b Sect. 1 Euhebecarpa. 



b. Capsule and leaves bearing large glands. 



Subsect. C. Adenophora, p. 54. 

 b. Capsule and leaves not glandular, c. 



c. Leaves comparatively large (mostly 2-6 by 1-3 cm.), 

 ovate, acute or rarely obtuse, gradually reduced 



upwardly, not noticeably dimorphous 



Subsect. B. Hebantha, p. 37. 

 c. Leaves smaller, usually dimorphous (lower shorter, 

 oval or oblong-oval, upper oblong to linear, lon- 

 ger), or uniform, elliptic to ovate, smaller than in 



Subsect. Hebantha Subsect. A. Microthrix. 



d. Leaves nearly uniform (the upper slightly smaller), 



oval or ovate Ser. a. Ovatifoliae. 



d. Leaves more or less dimorphous, the lower oval or 

 oblong-oval, the upper considerably longer, ob- 

 long to linear Ser. /?. Obscurae, p. 22. 



a. Lower sepals petaloid, deciduous, the upper one herbaceous, 



persistent; wings deciduous; aril glabrous . . .Sect. 2. Biloba, p. 57. 

 a. Sepals and wings persistent, the sepals herbaceous. 



Sect. 3. Huateca, p. 58. 



Sect. 1. Euhebecarpa (Chod.), comb. nov. Sepala herbacea 

 decidua rarissime persistentia vel subpersistentia; alae deciduae 

 rarissime subpersistentes ; arillus variabilis apice pubescens. 

 Polygala L. sect. Hebecarpa Chod. subsect. Euhebecarpa Chod. 

 Monog. ii. 12 (1893). Species typica P. obscura Benth. 



Subsect. A. Microthrix, subsect. nov. Arilli umbo saepius 

 magnus; folia uniformia ovalia vel late ovata (1.3-3 cm. longa 6-16 

 mm. lata), vel distincte biformia, inferiore oblongo-ovalia vel ovalia 

 superiora linearia vel oblongo-linearia longiora. Species typica 

 P. obscura Benth. 



Series a. Ovatifoliae, ser. nov. 1 Folia uniformia (sursum sen- 

 sim reducta) ovalia vel ovata. Species typica P. ovatifolia Gray. 



1 P. appressipilis (no. 45) might be sought here. 



