Part 1, 1907] GERANIACEAE 11 



orbicular-pentagonal, 2-3.5 cm. wide, 3-5-parted, the divisions lobed, especially near the 

 apex; pedicels retrorsely pubescent with glandless hairs; sepals awn-tipped, the outer 

 ones 7-S mm. long, the bodies elliptic or oblong-elliptic; petals purple, considerably 

 longer than the sepals ; style-column 14-17 mm. long, copiously pubescent with ascending 

 hairs ; carpel-bodies hirsute. 

 ■ Type collected in San Luis Totosi, Mexico, 1877,/. G. Scliaffner 45S. 

 Distribution : San Luis Potosi. 



18. Geranium flaccidum Small, sp. nov. 



Perennial, the caudex branched. Stems tufted, retrorsely hirsute and somewhat 

 shaggy ; the first internode not more elongate than the other ones ; leaf-blades pentagonal 

 in outline, thin, 1.5-3 cm. wide, 3-5-parted, the divisions incised and sharply toothed; 

 petioles shaggy-pubescent; pedicels pubescent like the petioles; sepals awn-tipped, the 

 outer ones 7-8 mm. long, the bodies ovate to elliptic-ovate, ciliate ; petals purple, some- 

 what longer than the sepals ; style-column 9-10 mm. long, glandular-hirsute ; carpel-bodies 

 2.5-3 mm. long, sparingly pilose ; seeds irregularly and obscurely reticulate. 



Type collected at La Chuparosa, Lower California, October 16, 1893, T. S. Biandegee. 



Distribution : Lower California. 



19. Geranium regale Rydberg, sp. nov. 



Perennial, the caudex usually branched. Stems ascending or spreading, 1-2 dm. long, 

 retrorselv pubescent ; leaf-blades pentagonal-reniform in outline, 2.5-4 cm. wide, 3-5-parted, 

 the divisions cleft and toothed, with scattered hairs on the upper surface, sparingly hirsute 

 especially on the veins beneath ; petioles pubescent like the stem, but usually more copiously 

 so; pedicels retrorse-pubescent with glandless hairs ; sepals markedly awn-tipped, the outer 

 ones 6-6.5 mm. long, the bodies ovate, appressed-pubescent, especially on the veins ; petals 

 pink or rose-colored, slightly longer than the sepals; style-colutnn about 10 mm. long, 

 hirsute, rather short-beaked. 



Type collected between Paehuea and Real del Monte, Hidalgo, Mexico, July 19, 1905, J. N. 

 Rose,' J. H. Painter & J. S. Rose S675. 



Distribution : Known onty from the type locality. 



20. Geranium Wislizeni S. Wats. Proc. Am. Acad. 21 : 421. 18S6. 

 Perennial, the caudex often branched. Stems ascending or spreading, 2-6 dm. long, 



sparingly hirsute, with ultimately more or less divaricate branches ; leaf-blades reniform 

 or reniform-pentagoual in outline, 3-8 cm. wide, sparingly hirsute on both sides and slightly 

 paler beneath than above, 3-parted or sometimes 5-parted, the divisions somewhat cuneate, 

 usually broad, cleft and coarsely toothed at the apex ; pedicels minutely hirsute with gland- 

 less hairs ; sepals awn-tipped, the outer ones 6-7 mm. long, the bodies lanceolate to elliptic- 

 lanceolate, sparingly fine-hirsute; petals wdiite, 7-9 mm. long; style-column 15-19 mm. 

 long, glandular-pubescent ; carpel-bodies about 4 mm. long, sparingly hirsute ; seeds about 

 3.5 mm. long, finely reticulate. 



Type locality : Norogachi, Mexico. 



Distribution: Northern Mexico. 



21. Geranium mexicanum H.B.K. Nov. Gen. & Sp. 5 : 230. 1822. 

 Perennial, the caudex sometimes branched. Stems often tufted, not scape-like, spread- 

 ing or decumbent, 2-7 dm. long, retrorsely pubescent ; leaf-blades pentagonal in outline, 

 1.5-4 cm. wide, 3-5-parted, the divisions incised or toothed, strigillose ; petioles of the 

 lower leaves elongate, pubescent like the stem; pedicels glandular-hirsute; sepals awn- 

 tipped, the outer ones 5.5-6.5 mm. long, the bodies ovate or elliptic ; petals strongly veined, 

 about twice as long as the sepals; style-column 16-18 mm. long, glandular-pubescent; 

 carpel-bodies 3 mm. long, sparingly hirsute ; seeds reticulate. 



Type locality : Between Guanajuato and Santa Rosa, Mexico. 

 Distribution : Mexico and Guatemala. 



22. Geranium radiatum Small, sp. nov. 

 Perennial, the caudex branched. Stems diffusely spreading, more or less branched, 

 sparingly retrorse-pubescent, the hairs short ; leaf-blades pentagonal in outline, 2-4 cm. 



