ERIOCADLONACEiE. (PIPEWOKT FAMILY.) 48'J 



American species are all stemless, yiith a depressed head, and liave the parts of 

 the flowers in twos, the stamens 4. 



1. £• deca.ng;ulare9 L. {syn. Pluk., &c.) Leaves Umar-aword-shaped, 

 ascending (6'-15' long), of a rather &in textm-e; scape lO-12-nbbed (l°-3° 

 high) : chaff (bracts among the flow«rs) pointed. 11 (E. ser6tinum, 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. gnaphalodes, 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 lO-ribbed scape ; chaff obtuse. 1). (E. decangulare, 

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

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

 confounded. 



3. E. septangulsire, Withering. Leaves short (V-S' long), awl-shaped, 

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

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

 chaff acutish. IJ. (E. pellucidum, Mi'cAx.) — In ponds or along their borders, 

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

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



2. PJEPAEANTMUS, Mart. (Sp. of Ekiooatjmn 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 naiirakq, dust or 

 Jlour, and avdos, flower, from the meal-like down or scurf of the heads and flow- 

 ers of many [South American] species.) 



1. P. fliilvidus, • Kunth. Tufted, stemless; leaves bristlc-awl-shaped 

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

 anglcd; 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-wliite. IJ. 1 (Eriocaulon flavidum, 

 Miclix.) — Low pino barrens, S. Virginia and southward. 



3. liACHNOCAIJEOW, Kunth. Hairy Pipewort. 



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

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

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

 1-cellcd ! Fert. Fl. Ovai-y 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 the 

 name, from \axvoi, wool, and KuuXdr, stalk). 



1. li. Micliatlxii, Kunth. (Eriocaulon villosum, M'cAx.)— Low pine 

 barrens, Virginia (Pursh), and southward. 



