HOSE— MF.XTCAX AND CENTRAL AMERICAN PLANTS. 1()7 



are pa^sin^ under the name of 1\ ramo^i^i^hna and who has recently re-collected and 

 distributed Bentham's species, 



Parosela lasiostachya (Eenth.) Iloye. 



Baiea khvo4ae}nj(t Benih. PI. Ihirtw. IL 18:59, 



Parosela emoryi (A. Cray) IJellur. 



SPHINCTOSPERMUM, A NEW GENUS. 



Sphinctospermum Rone, gen. nov. 



Calyx teeth 5, acunnnate, the 2 upper more united than the others; petals nearly 

 equal in length; banner nearly orliicular; Mings olt]on^; stamens 10, one free to the 

 ba,^e, wtyle slender, hairy near the top; ovaries sessile, many-ovuled; pods linearj 

 2'Valved, septate between the seeds, G to 10-secded; seeds shortly oblong, 4-angIed, 

 constricted in the middle siitrgcsting miniature vertebrae, duU-colored and minutely 



roughened. 



Annuals with simple lint^ar leaves and single (rarely paired) axillary flowers. In 

 its flowers and pods suggesting some species of Cracca (Tephrosiu), such as C. tenella. 

 Its annual habit, sim[)le leaves, ami axillary flowers, and especially its most remark- 

 able seeds, exclude it positively from Cracca. 



Sphinctospermum constrictum (S. Wats.) Rose. Plate XXXiV, 



TepJinma coni^trldaS. Wats. Troc. Am. Acad. 24: 40, 18S9. 

 Reported from western Sonora arul l^ower California. 



Exi'LANATioN OF Platk XXXl V.— Fi^^ u, pliuU; b Jiiid /■, llnwiTS; d, ])aniier; r, wing; /, keel; g, sta- 

 menH; A, seed. Fig. a, natural size; If to y, Kcalo 3; /(, scale 4, 



KRAMERIACEAE. 



THE NORTH AMERICAN SPECIES OF KRAMERIA. 



Our knowledge of the species of Knuueria has been very nieag-re, 

 especially that of the Mexican ones. Recently collectors in Mexico 

 have not only found new species, but rediscovered some of the very 

 rare ones, such as IC cusjjldafa^ TC rerohda^ and K, parvifolin. Of 

 the fifteen species which we now recognize from North America, all 

 except K, lanceolata are ri^.presented iu our Mexican collection. The 

 following are the North American species: 



Krameria bicolor S. Wats. Pror. Am. Acad. 21; 417. 18i)t>. 



Krameria cuspidata Presl, Ki'l. Ilaenk. 2; lOo. ISor^-^^G. 



Krameria cytisoides Cav. le. 4: (U. pL 890. 1797. 



Krameria diffusa Kose & Pa'mterj sp. nov- 



Perennial with lon<,^ diffuse herbaceous branchea and scant pubescence; leaves 

 linear,! to 2 em. lon^^ arute, becoming glabrate; inflorescence racemose; pedmiclea 

 10 to 15 mm. long, bibracteato alcove tlKMuiddle; flowers large, purple; fruit small, 

 globular, with a few short stout .-pines^, these either naked or with very short retroree 



hairy. 



Typt^ U. S. National Herbarium no. 452798 (Ru«e Jio. 9311), apparently common 



on the west coast of Mexit-o, extending from Sinaloa to Guerrero. 



Specimens examined: 



Sinaloa: Ymala, Dr. E, Palmer, Rcptember 25 to Octobers, 1891 (no, "1071). 

 Morelop: Near Puenta do Ixtla, J. N. Kose and Itobert Hay, July 4, 1901 (no. 



5826), 

 Guerrero: Near Iguala, J. N, R<tHe an.l Jos. 11 . Painter, August 10 and 12, 1905 



(no. 9311). 



