GREENMAN. — SPERM ATOPHYTES FROM MEXICO, ETC. 239. 



September, 1885, Dr. Ed. Palmer t no. 175 (lib. Gr.), a strong vegetative 

 specimen. State of Souora : vicinity of Guaymas, on mesas among 

 grass, October, 1887, Dr. Ed. Palmer, no. 242 (hb. Gr.). 



Var. jaliscense, n. var. Stem rather freely branching from the base : 

 legume pubescent with spreading hairs : in other characters like the 

 species. — Mexico. State of Jalisco: Guadalajara, September, 188G, 

 Dr. Ed. Palmer, no. 4G0 (hb. Gr.). State of Guerrero : vicinity of 

 Acapulco, October, 1894, to March, 1895, Dr. Ed. Palmer, no. 23 

 (hb. Gr.). 



The species here described has been confused hitherto with Cassia 

 nictitans. L. ; it differs, however, in having a constantly narrower pod, 

 smaller (except in var. mensalis) leaflets which are conspicuously ciliate, 

 and also in having usually long spreading hairs as well as shorter subap- 

 pressed ones on the stem. C nictitans was originally ascribed to Vir- 

 ginia ; and from a large suite of specimens now at hand its range in North 

 America may be given as from Vermont and Massachusetts to Georgia, 

 west to New York, Missouri, Kansas, and eastern Texas. 0. leptadenia 

 occurs in Texas, as far as yet known, west of the Pecos River only, and 

 extends into New Mexico and Arizona southward through the dry parts 

 of Mexico to Oaxaca. C. leptadenia is similar to C. aspera, Muhl., and 

 to C. Simpsoni, Pollard, but from both of these species it is readily 

 separated by the characters of the foliage and pod. 



Argythamnia Pringlei, n. sp. Shrub : stem somewhat angulate, 

 covered with a whitish cortex, glabrous; ultimate branches sericeous- 

 tomentose : leaves petiolate, subrotund to oblong-lanceolate, 1.5 to 7 cm. 

 long, 1.2 to 3 cm. broad, rounded to short-acuminate and acute at the apex, 

 entire or denticulate, rounded to obtuse at the base, pale green and 

 pubescent above, densely white sericeous-tomentose beneath ; lateral 

 nerves 4 to 6 on either side of the midrib, divergent: racemes axillary, 

 pedunculate, few-flowered, subsericeous-pubescent ; peduncles slender, 1.5 

 to 2.5 cm. long; bracts narrowly lanceolate, acuminate, persistent: 

 rlowers monoecious : staminate flowers 4 to 8 ; sepals linear-lanceolate, 

 acute, 0.5 cm. long; petals unguiculate, oblong-ovate, about two-thirds as 

 long as the calyx, obtusish, pubescent on the back along the midrib, 

 greenish : pistillate flowers usually 1 at the base of each floral cluster ; 

 pedicels about as long as the subtending bract ; calyx subangulate- 

 winged in cross-section ; sepals ovate, subacuminate, acute, 7 to 8 mm. 

 long: petals minute, spatulate, about 1 mm. long; ovary densely pubes- 

 cent; styles 3-parted, the divisions again 3-parted and crenately lobed : 

 mature capsule not seen. — Mexico. State of Morelos : sides of a bar- 



