ROSE MEXICAN AND CENTRAL AMERICAN PLANTS. 101 



arc passing under the name of />. ramosissima and \\ ho has recentlj re-collected and 

 distributed Benl barn's Bpecies. 



Parosela lasiostachya I Benth. I I 



Dalea lasiostachya Benth. PI. Hartw. 11. L839. 



Parosela emoryi I A. <>ra\ 1 Idler. 



SPHINCTOSPERMUM, A NEW GENUS. 



Sphinctosperniuni Rose, gen. nov. 



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

 equal in length; banner nearly orbicular; wings oblong; stamens 10, one free to the 

 base, style Blender, hairy near the top; ovaries sessile, many-ovuled; pods linear, 

 2-valved, septate between the Beeds, 6 to 10-seeded; seeds shortly oblong, 4 -angled, 

 constricted in the middle suggesting miniature vertebrae, dull-colored and minutely 

 roughened. 



Annuals with simple linear leaves and single i rarely paired I axillary flowers. In 

 it- flowers and pods suggesting Borne species of ( Jracca I Tephrosia), such as ( '. fenella. 

 Its annual habit, simple leave-, and axillary flowers, and especially its mosl remark- 

 able seeds, exclude it positively from Cracca. 



Sphinctospermum constrictum < s. Wats.) Rose. Plate KXXIV. 



Tephrosia constricta S. Wats. Proc. Am. Acad. 24:46. 1889. 

 Report*-. 1 from western Sonora and Lower California. 



Explanation of Plate XXXIV.— Fig. a, plant; band c, flowers; d, banner; e, wing;/, keel; 

 mens; ft, seed. Fig. a, natural size; b to g, scale 3; ft, scale i. 



KRAMERIACEAE. 

 THE NORTH AMERICAN SPECIES OF KRAMERIA. 



Our knowledge of the species of Krameria has been very meagre, 

 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 A. cuspidata, K. revoluta, and K. parvifolia. Of 

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

 except I\. lanceolata are represented in our Mexican collection. The 

 following are the North American species: 



Krameria bicolor S. Wats. Proc. Am. A. ad. 21:417. L896. 

 Krameria cuspidata I 'resl, Rel. Ilaciik. 2: L03. L835-36. 

 Krameria cytisoid.es (a v. [c. 4: 61. pi. S90. I7 ( '7. 



Krameria diffusa Rose & Painter, sp. QOV. 



Perennial with long diffuse herbaceous branches and scam pubescence; leaves 

 linear, 1 to 2 cm. long, acute, becoming glabrate; inflorescence racemose; peduncles 

 10 to 1") mm. long, bibracteate above the middle; flowers large, purple; fruit small, 

 globular, with a few si nut Btoul spines, these either naked orwith veryshorl retrorse 

 hairs. 



Type l\ s. National Herbarium no. 452798 I Rose no. 9311 I, apparently common 

 on the wesi coasl of Mexico, extending from Binaloa to I ruerrero. 

 S/» dim us examined: 



Sinaloa: Ymala, Dr. E. Palmer, September 25 to October 8, 1891 (no. 1671 . 

 Moivlos: Near Puenta de [xtla, J. N. Rose and Roberl Hay, July 4, 1901 no. 



5326 . 

 Guerrero: Near [guala, J. N. Rose an*] Jos. 11. Painter, August 10 and 12, 1905 

 0.9311). 



