Par? 2, 1917] AMARANTHACEAE 163 
mm. long; leaf-blades oblong-ovate, rarely oblong or oval, 2-7 cm.. long, 0.6-2.6 cm. wide, 
acute to obtuse or rounded at the apex, acute or obtuse at the base, thin, sparsely tomentulose 
or glabrate on the upper surface and deep-green, densely white- or gtayish-tomentose beneath, 
the lateral veins evident, ascending; flowers dioecious, in slender, short, axillary or terminal, 
naked or leafy panicles; spikelets slender, much elongate, flexuous, rather loosely flowered, 
their rachises tomentose; bracts and bractlets of the staminate flowers one third as long 
as the sepals, suborbicular, rounded at the apex, glabrous or sparsely villous, the sepals 
elliptic-oblong, 2.5 mm. long, obtuse, scarious, stramineous, glabrous, or the inner ones lanate 
at the base; filaments shorter than the sepals, the staminodia half as long as the filaments, 
narrowly triangular, denticulate; bracts and bractlets of the pistillate flowers about as long as 
the sepals, broadly rounded at the apex, hyaline, brownish, glabrous or sparsely villous, the 
sepals lanceolate to ovate, 1.5-2 mm. long, acute, I-nerved, densely white-villous; style short, 
the stigmas slender, elongate; utricle oblong, about equaling the calyx; seed 1 mm. long, yel- 
lowish-brown. 
Type LocaLiry: Santa Catarina Canyon, Oaxaca. 
DISTRIBUTION: Oaxaca and Puebla. 
23. Iresine grandis Standley, sp. nov. 
Alternonthera canescens Mog. in DC. Prodr. 13?: 351, in part. 1849. Not A. canescens H. B. K. 
1817; nor Iresine canescens Humb. & Bonpl. 1805. 
Erect shrub, 1.5-3 meters high, sparsely branched, the branches stout, terete, smooth, 
densely villous-tomentulose or rarely glabrate in age; petioles stout, 1-2 cm. long; leaf-blades 
broadly ovate-rhombic to broadly ovate, 6-13 cm. long, 3-7 em. wide, acute or acuminate at 
the apex, acttte or obtuse at the base and short-decurrent, firm, sparsely canescent on the 
upper surface or glabrate, densely villous-tomentulose beneath, or rarely glabrate; flowers 
dioecious, loosely paniculate, the terminal panicles pyramidal, usually as broad as long, 1.5~3 
dm. long, sparsely leafy below, the branches spreading or ascending; spikelets sessile or pe- 
dunculate; bracts and bractlets of the staminate flowers one third as long as the sepals, ovate- 
orbicular, glabrous, the sepals oblong, obtuse or acutish, 2.5-3 mm. long, glabrous, stramineous; 
filaments equaling the sepals, subulate, the staminodia rhombic or lanceolate, finely dissected 
into subulate segments; bracts of the pistillate flowers as long as the sepals, round-ovate, 
whitish, glabrous, the sepals oblong, obtuse, 1.5 mm. long, densely pilose, the hairs white, 
twice as long as the sepals or shorter; stigmas slender, elongate; utricle oblong, about as long 
as the sepals; seed 1 mm. long, reddish-brown. 
e collected on limestone ledges, Las we San Luis Potosi, Mexico, December 5, 1891, 
Typ 
Cc. G. Pringle 3962 (U.S. Nat. Herb. no. 53767 
DistrrBution: San Lis Potosi to Guatemala. 
24. Iresine Calea (Ibdfiez) Standley, Contr. U. S. Nat. Herb. 
18: 94. 1916. 
Gomphrena latifolia Mart. & Gal. Bull. Acad. Brix. 10!: 349. 1843. 
Alternanthera latifolia Moq. in DC. Prodr. 13?: 351. 1849. 
Achyranthes Calea Ibafiez, Naturaleza 4: 79. 1879. 
Ivesine latifolia Benth. & Hook. Gen. Pl. 3: 42. aa Not I. latifolia D. Dietr. 1839. 
Hebanthe mollis Hems!. Biol. Centr. Am. Bot. 3: 20. 1882. 
Tresine laxa S. Wats. Proc. Am. Acad. 21: 454. 1886. 
Gossypianthus mollis Kuntze, Rev. Gen. 543. 1891. 
Erect shrub, 1.5-2.5 meters high, much branched, the branches slender, ascending, densely 
and finely villous-canescent when young, glabrate in age; petioles 2-15 mm. long; leaf-blades 
broadly ovate, ovate-oblong, or lance-ovate, 3-10.5 cm. long, 1.3-7 cm. wide, acuminate at 
the apex or rarely obtuse or even rounded, rounded or obtuse at the base, sometimes short- 
decurrent, thinly scaberulous-canescent or glabrate on the upper surface and green, densely 
or sparsely pilose-sericeous beneath; flowers dioecious, in broad open terminal panicles, these 
leafy below, the branches divaricate or ascending, often flexuous, the spikelets densely flowered, 
short or elongate, sessile or pedunculate, the rachis lanate; bracts and bractlets of the staminate 
flowers one third as long as the sepals, broadly ovate, rounded to acutish at the apex, scarious, 
whitish. or stramineous, more or less villous; sepals narrowly oblong, obtuse, 2 mm. long, 
