Part 2, 1917] AMARANTHACEAE 165 
or few, fascicles of smaller ones sometimes present in the axils, yellowish-green, thick and 
firm, glabrous; petioles stout, 3-30 mm. long, those of the upper leaves shorter; blades linear- 
oblong to oval-oblong, lanceolate, lance-oblong, or rarely ovate, 2-10 cm. long, 0.4-2.5 em. 
wide, obtuse or rounded at the apex or rarely a few of the leaves acute, cuneate to attenuate 
at the base, the midvein conspicuous beneath, the lateral veins few and inconspicuous; pistillate 
panicles narrow and dense, 10-30 cm. long, 2-6 or rarely 12 cm. broad, much branched, the 
branches erect or ascending, glabrous, the spikelets alternate or opposite, pedunculate or 
sessile, slender or stout, 0.3-4 cm. long, sometimes flexuous; staminate panicles usually more 
slender and diffuse, the branches often flexuous and the spikelets sometimes longer; bracts 
yellowish-white, half to two thirds as long as the sepals, suborbicular to broadly ovate, obtuse 
or acute; sepals about 1 mm. long, oblong, obtuse or acutish, those of the pistillate flowers 
3-nerved, the pistillate flowers bearing copious long white wool at the base; lobes of the staminal 
cup rather prominent, rounded; utricle shorter than the sepals; seed suborbicular, dark reddish- 
brown, shining, 0.5 mm. in diameter. 
TYPE LocaLity: Tropical America. 
Disrrieurion: Usually on rocks along the coast, southern Florida, the Bahama Islands, and 
Cuba; also in Colombia. 
28. Iresine rhizomatosa Standley, Proc. Biol. Soc. Wash. 28: 172. 
1915. 
Iresine celosioides Michx. Fl. Bor. Am. 2: 244. 1803. Not I. celosioides 1. 1763. 
Iresine paniculata Uline & Bray, Bot. Gaz. 21: 353, in part. 1896. Not Celosia paniculata L. 1753. 
Perennial from slender elongate horizontal rootstocks; stems commonly solitary, her- 
baceous, stout, erect, 3-15 dm. high, usually simple up to the inflorescence, sparsely villous 
with short hairs, more densely villous at the nodes, sometimes glabrous throughout, the nodes 
slightly swollen, the internodes 5-14 cm. long; petioles slender, 0.8-3 cm. long; leaf-blades 
broadly deltoid-ovate to ovate or elliptic-oval, 6-15 em. long, 2-7 cm. wide, acute or rather 
abruptly acute to long-actuminate, or the lowermost very rarely obtuse at the apex, truncate 
to acute at the base, usually slightly decurrent, thin, bright-green, bearing a few scattered 
short stout hairs on the upper surface along the veins, sparsely pubescent beneath with short 
stout soft hairs, or sometimes nearly glabrous; pistillate panicles 7-30 cm. long and 2.5—20 
em. broad, much branched, the stoutish branches erect or ascending, usually dense, sparsely 
villous, the spikelets alternate or opposite, stout, densely flowered, 0.5—2 cm. long, the staminate 
panicles often laxly branched and with longer spikelets; bracts white, equaling or somewhat 
shorter than the sepals, ovate to ovate-orbicular, acute or acutish; sepals ovate-oblong or 
oblong, acute or acuminate, 1~1.3 mm. long, faintly 1-nerved, white, the pistillate flowers 
bearing copious long white wool at the base; lobes of the staminal cup nearly obsolete; utricle 
equaling or commonly longer than the sepals; seed suborbicular, dark-red, shining, 0.5 mm. 
in diameter. 
TYPE LOCALITY: Plummers Island, Montgomery County, Maryland. 
DISTRIBUTION: Maryland to Kansas, central Texas, Tennessee, and Alabama. _ 
In.ustrations: Britt. & Brown, Ill. Fl. f. 1414; ed. 2. f. 1676 (both as I. paniculata). 
29. Iresine frutescens Mog. in DC. Prodr. 132: 344. 1849. 
Stems suffruticose, at least below, glabrous, very slender, flexuous, ascending or scandent,. 
somewhat swollen at the nodes, the internodes 1.5-12 cm. long; leaves few or numerous, very 
thin, bright-green, glabrous, or with a few short coarse hairs along the veins beneath; petioles 
slender, 1-5 cm. long; blades of the lower leaves oval-ovate, ovate, or narrowly ovate, 9-22 
cm. long, 3-6 cm. wide, long-acuminate or attenuate at the apex, obtuse or rounded at the 
base, the veins very slender; blades of the upper leaves linear-elliptic to narrowly lanceolate 
or rarely ovate-lanceolate, 3-7 cm. long, 0.3-2 cm. wide, acuminate to long-attenuate at the 
apex, cuneate to attenuate at the base; panicles much branched, the branches elongate, very 
slender, spreading or reflexed, flextious, glabrous or with a few short slender yellow hairs; 
pistillate spikelets 2-4 mm. long, 1.75 mm. thick or less, densely flowered, alternate, the 
staminate spikelets more slender, often 2 cm. long, loosely flowered, flexuous; bracts less than 
half as long as the sepals, oval to orbicular, obtuse, yellowish-white; sepals 0.5-0.75 mm. 
