PDF - University Library

116 FIELDIANA: BOTANY, VOLUME 28
remainder glabrous, not bearded, not glanduliferous: style very
short, about 0.1 mm. long, glabrous, terminated by 3 recurvedspreading
stigmas of about similar length and 3 elongated erect
fimbciate appendages about 0.8 mm. long and dark-brown at the apex;
ovary large, elliptic, about 0.8 mm. long and 0.4 mm. wide, broadly
3-angulate or-alate, glabrous, 3-celled.
Type in herb. New York Botanical Garden, collected by a waterfall
in a swampy savanna between Rio Karuai and Salto de Iraba-naima
along the Rio Karuai, at the southwestern base of Ptari-tepui, state
of Bolivar, alt. 1220 m., November 28, 1944, Julian A. Steyermark
60703.
Eriocaulon dimorphopetalum Moldenke, sp. nov.
Herba; foliis caespitosis tenuiter membranaceis saepe pellucidis
patentibus 2-6 cm. longis longe attenuates fenestratis glabris; vaginis
laxis 3-5.5 cm. longis pellucidis fenestratis glabris, ad apicem subtruncatis
fissisque; pedunculis paucis erectis stramineis vel brunneis
5-9 cm. longis 3-costatis glabris tortis; capitulis brunnescentibus
glabris hemisphaericis 5 mm. diam.; floribus dimeris.
Herb; stems very abbreviated; leaves cespitose, thin-membranous,
often pellucid, wide-spreading, 2-6 cm. long, 1-2 cm. wide at the
mid-point, long-attenuate, fenestrate, glabrous on both surfaces;
sheaths loose, 3-5.5 cm. long, pellucid, fenestrate, glabrous, subtruncate
and split at the apex; peduncles 5 or more per plant, erect,
stramineous or brownish, 5-9 cm. long, 3-costate, glabrous, slightly
twisted; heads light brown (at least, when dry), hemispheric, about
5 mm. in diameter, smooth; involucral bractlets few, stramineous or
light-brown, broadly elliptic, about 2 mm. long and 1.8 mm. wide,
rounded at the apex, glabrous; receptacle glabrous; receptacular
bractlets elliptic-obovate, about 2 mm. long and 0.9 mm. wide, obtuse
or subacute at the apex, stramineous on the upper half, subhyaline
toward the base, glabrous; staminate florets few, central: sepals 2,
separate, subhyaline, obovate, about 1.3 mm. long and 0.6 mm. wide,
apparently cucullate at the apex, not keeled, glabrous throughout;
petals 2, linear-oblong, separate almost to the base, about 1 mm.
long and 0.1 mm. wide, acute at the apex, glabrous, not glanduliferous;
stamens 4, borne at the apex of a club-like stramineous 1-
inch-long prolongation of the receptacle, the filaments divergent,
about 0.2 mm. long; anthers black, about 0.3 mm. long, 2 often
aborted; pistillate florets very numerous, peripheral, in many series:
sepals 2, elliptic-falcate, stramineous or light-brown throughout,
about 2.3 ram. long and 0.8 mm. wide, apiculate at the apex, glabrous
throughout, very broadly keeled on the back, conduplicate; petals 2,
1
usually reduced, the outer developed and stramineous throughout,
oblong, about 1.7 mm. long and 0.3 mm. wide, obtuse at the apex,
with a small black gland at the center of the apex, glabrous throughout,
the reduced one about 0.4 mm. long and 0.2 mm. wide and hyaline;
style capillary, about 0.4 mm. long, glabrous; stigmas 2, 0.4-0.5