ERIOCAULONACE^. (PIPEWOKT FAMILY.) 487 



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

 the flowers in twos, the stamens 4. 



1. E. decangulare, L. (syn. Pluk., &c.) Leaves linear-sux>rd-shaped, 

 ascending (6' -15' long), of a rather firm texture; scape lQ-I2-ribbed (l-3 

 high) : chaff (bracts among the flowers) pointed. 1J. (E. serotinum, 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. gnaplialodes, 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 IQ-ribbed scape; chaff obtuse. 1J. (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. septailgnilsire, Withering. Leaves short (l'-3 ; long), awl-shaped, 

 pellucid, soft and very cellular; scape 7-striate, slender, 2' -6' high, or when 

 submerged becoming l-6 long (Torr.), according to the depth of the water; 

 chaff acutish. 1J. (E. pcllucidum, Michx.) In ponds or along their borders, 

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

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



2. PJEPAL.ANTHUS, 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 iramd\T], dust or 

 flour, and avOos, flower, from the meal-like down or scurf of the heads and flow- 

 ers of many [South American] species.) 



1. P. II; i. vie! us, 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. ty ? (Eriocaulon flavidum, 

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



3. L,ACHNOCAITL,O]V, Kunth. HAIRY PIPEWORT. 



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

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

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

 1-celled ! Pert. FL Ovary 3-celled, 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 ,he 

 name, from Xa^i/os, wool, and <av\6s, stalk). 



1. Lu Micliauxii, Kunth. (Eriocaulon villosum, Michx.) Low pine 

 barrens, Virginia (Pursh), and southward 



