5b4 CLIX. ERICAULONACEZ. ERIOCAULON. 
linear-ensiform, more or less twisted, acute, rigid, erect, shorter than the scape; 
head oblong-globose, obtuse; scales coriaceous, imbricated, obtuse, concave, 
scarious and yellowish at edge; lower ones empty; sep. not exserted; claws of 
petals as long as the scales.—2| Meadows, swamps and prairies, U. 8. not un- 
common. Scape firm and wiry, often twisted or flexuous, 1—2f high, 1’ diam. 
Leaves few, flat, 6—12’ by 2—3,” clasping or equitant at base. Petals yellow, 
limb spreading, retuse. July, Aug. 
B. brevifolia. Wood. (X. brevifolia. Mz.) ws. linear-subulate, short, much 
twisted.—Evidently a variety of this polymorphous species. 
y.? Olneyi. Wood. ILws. larger, nearly as long as the scape; strongly equi- 
tant-clasping at base; scales rather loosely imbricated ; sep. a little exserted; 
filaments hairy.—Cumberland, R. L, Olney! Scape 18—24’ high. Leaves 3— 
4” wide.—Perhaps distinct, but its claims cannot now be satisfactorily deter- 
mined. , e 
2. X. rimpriatus. Ell. Fringed Xyris. 
Scape tall, erect; lvs. linear-ensiform, about equaling the scape; head ob- 
long, with the scales loosely imbricated; sepals much exserted, briate—A 
large species, found in N. J. (Darlington) 8. to Ga., Elliott. Scape 2—3f high. 
—I have never seen this species. 
Orpver CLIX. ERICAULONACEA.—Preworrts. 
Herbs perennial, aquatic, with linear, spongy, cellular leaves-sheathing at base. 
Fis. monecious or dicecious, in a dense head. Perianth 2—6-parted, or wanting. 
Sta. 6,some of them generally abortive. Anthers mostly 1-celled. 
Ova. 1 or more-celled, cells 1-seeded. Seeds pendulous. 
Genera 9, species 200, chiefly South American. Theyare of no known use. 
ERIOCAULON. 
Gr. ep.ov, wool, kavdos, stem; the stem being sometimes woolly or tomentose. 
Flowers £, collected into an imbricated head; involucre many- 
leaved. cin the disk; perianth single, 3-cleft, the 2 inner seg- 
ments united nearly to their summit; stamens 4—6. @ in the 
margin ; perianth single, deeply 4-parted; style 1; stigmas 2 or 3; 
capsule 2—3-celled, 2—3-lobed ; cells 1-seeded. 
1. E. sepranGuLare. With. (E. pellucidum. Michz.) Pipewort. 
Smooth ; scape slender, about 7-furrowed ; Jvs. linear-subulate, pellucid, 
channeled, 5-veined; Ad. small, globose; scales of the involucre obtuse—A 
small plant of simple structure, in water, only the scape arising above the sur- 
face.. Leaves radical, submersed, in a small tuft at the bottom, 1—3’ by 1—2”, 
tapering to a point, transparent at base. Stem simple, erect, 4—12/ high, with 
a small, terminal, hemispherical head of close, white flowers. Jn. 
2. E. pecaNGULARE. Michx. Tall Pipewort. ) 
Scape 10-furrowed ; /vs. ensiform, glabrous; ids. large, depressed-globose ; 
invol. scales oval, acute, those of the receptacle mucronate.—Ponds, N. J. to 
Car. Scape 2—3f high. Flowers very white. Aug. 
3. E. GNapHALOIDEs. Michx. (E. decangulare. Walt.) 
Scape somewhat compressed, with 10 furrows; dvs. short, subulate, ensi- 
form, glabrous; hds. hemispheric-convex; invol. of shining, scarious, oval, 
round-obtuse scales.—In still waters, Scape 10—14/ high. July. : 
