ERIOCAULONACE^:. (PIPEWORT FAMILY.) 489 



American species are all stouiless, with a depressed head, and have the parts of 

 the flowers in twos, the stamens 4. 



1. E. decanglllare, L. (syn. PiuL, &c.) Leaves linear-sword-skaped, 



ascending (6'- 15' long), of a rather firm texture; scape lO-12-ribbed (l°-3° 

 high) : chaff (bracts among the flowers) pointed. y. (E. scrotinum, Walt.) — 

 Pine-barren swamps, New Jersey ? to Virginia, and southward. July - Sept. — 

 Involucral scales roundish, straw-color or light brown. Flowers and bracts, as 

 in the following, tipped with a white beard. 



2. E. ysiapiutioiles, Michx. Leaves short and spreading (2' -5' long), 

 grassy-awl-shaped, soft and cellular, tapering gradually to a point, mostly 

 shorter than the sheath of the 10-ribbed scape ; chaff obtuse, y. (E. decangulare, 

 L., in part, viz. as to pi. Clayt.) — Pine-barren swamps, New Jersey to Vir- 

 ginia, and southward. June -Aug. — This and the last have been variously 

 confounded. 



3. E. M>g>taiBgllls\rc, Withering. Leaves short (V - 3' long), awl-shaped, 

 pellucid, soft and very cellular ; scape 1-striate, slender, 2' - 6' high, or when 

 submerged becoming l°-6° long (Tori:), according to the depth of the water; 

 chaff acid i si i. lj. (E. pellucidum, Michx.) — In ponds or along their borders, 

 from New Jersey and Penn. to Michigan, and northward. Aug. — Head 2" -3" 

 broad ; the bracts, chaff", &e. lead-color, except the white coarse beard. (Eu.) 



2. PjEPALANTHUS, Mart. (Sp. of Eriocaulon of authors.) 



Stamens as many as the (often involute) lobes of the funnel-form corolla of 

 the sterile flowers, and opposite them, commonly 3, and the flower ternary 

 throughout. Otherwise nearly as in Eriocaulon. (Name from TvaiiTaKr], dust or 

 flour, and av$os, flower, from the meal-like down or scurf of the heads and flow- 

 ers of many [South American] species.) 



1. S*. fiiiViaiss, Kunth. Tufted, stemless ; leaves bristle-awl-shaped 

 (1' long) ; scapes very slender, simple, minutely pubescent (6' -12' high), 5- 

 angled ; bracts of the involucre oblong, pale straw-color, those among the 

 (ternary) flowers mostly obsolete ; perianth glabrous ; sepals and petals of the 

 fertile flowers linear-lanceolate, scarious-white. JJ. ? (Eriocaulon flaviduni, 

 Michx.) — Low pine barrens, S. Virginia and southward. 



3. EACIIrVOCAlTEOrV, Kunth. Hairy Pipewort. 



Flowers monoecious, &c, as in Eriocaulon. Calyx of 3 sepals. Corolla 

 none ! Ster. Fl. Stamens 3 : filaments below coalescent into a club-shaped 

 tube around the rudiments of a pistil, above separate and elongated : anthers 

 1 -celled ! Fert. FL Ovary 3-cclied, surrounded by 3 tufts of hairs (in place 

 of a corolla). Stigmas 3, two-cleft. — Leaves linear-sword-shaped, tufted. 

 Scape slender, simple, bearing a single head, 2-3-angled, hairy (whence the 

 name, from Xd^vos, wool, and KavXvs, stalk). 



1. E. MicBiauxii, Kunth. (Eriocaulon villosum, Michx.) — Low pine 

 barrens, Virginia (Pursh), and southward. 



