352 The Botanical Gazette. [June, 
rower thicker leaves which are white tomentose beneath: the 
branches of female inflorescence are condensed into narrow 
panicles much less profuse than in typical 7. canescens, of 
which it is possibly only a form. 
Mexico, Monterey, Palmer 1133 (1880). 
IRESINE SCHAFFNERI Wats. Proc. Amer. Acad. 21: 437.1886. 
Suffrutescent: panicles mostly long pedunculate, the spike- 
lets sessile and somewhat crowded upon the short branches: 
emale flowers as in J. canescens: male flowers more pubes- 
cent on the sepals and longer bracted. The long peduncu- 
late panicles seem to distinguish this plant from the two pre- 
cedin 
Mexico. Types in Gray, J. D. S. and Columbia College 
herbaria. 
++ ++ Staminodia entire. 
IRESINE PRINGLE! Wats. Proc. Amer. Acad. 25: 161. 1890. 
Shrubby, finely tomentose, the very young leaves densely 
white tomentose, becoming bright green and nearly glabrous 
above and thinly tomentose beneath, lanceolate: sepals of 
female flowers rigid, 1™ long, acuminate, spreading tips, 4 
Prominent bright green mid-nerve and white margins, very 
woolly, especially near the base. The species is well marked 
by the peculiar calyx of the female flower. 
_ Reported from several states in northern Mexico. Types 
in Gray, J. D. S., and Columbia College herbaria. 
IRESINE LATIFOLIA Benth. & Hook. Gen. Pl. 3: 42. 1883. 
Alternanthera latifolia Moq. 1. c. 351. 1849. 
Crashers latifolia Mart. & Gal. Bail. Aad Brux. (Reprint p. 9)- 
I 
Iresine laxa Wats. Proc. Amer. Acad. 21: 454. 1886. 
Suffruticose or woody, tomentose, leaves from broadly 
ovate to ovate-lanceolate, those on the flowering branches 
narrower and reduced: panicle more diffuse than in J. canes 
cens, with flowering branches slenderer and more lax: flowers 
aggregated in spikelets, alternate and pedunculate along the 
Opposite branchlets of the diffuse panicle: sepals of male flow- 
ers short hairy: staminodia long and narrow, not papillate: 
sepals of female flowers thin, densely long woolly. Those 
