

372 



ERIOCAULACEAE. 



Eriocaulon compressum Lam. Flattened Pipewort. (Fig. 900.) 



Eriocaulon compressum Lam. Enc}-cl. 3: 276- 

 1789. 



Eriocaulon gnaphalodes Michx. Fl. Bor. Am. 

 2: 165. 1803. 



Leaf-blades 6-20- fen estrate-nerved, usually 

 shorter than the sheaths and tapering to a 

 long sharp point, rigid, or when submersed 

 thin and pellucid. Stem a mere crown; 

 scapes 6 / -3 tall; smooth, flattened when 

 dry, io-12-angled; involucral bracts rounded, 

 obtuse, scarious, shining, smooth, imbricated 

 in 3 or 4 series; heads 3 // -6 // in diameter, 

 frequently dioecious; receptacle glabrous; 

 flowers i}4"-2" high, otherwise similar to 

 those of the preceding species. 



In still shallow water, southern New Jersey to 

 Florida and Texas. Also in Cuba. At flowering 

 time the styles and stigmas are much exserted, 

 standing above the heads like proj ecting threads. 

 May -Oct. 



3. Eriocaulon decangulare L. Ten-angled Pipewort. (Fig. 901.) 



Eriocaulon decangulare L. Sp. PI. 87. 1753. 



Stems short and thick, i / -2 / long. Leaf-blades 

 finely many-nerved, tapering to a blunt point, 

 6 / -2o / long, 2 // -S // wide, usually much longer 

 than the sheaths; scapes stout, rigid, glabrous, 

 io-14-angled, i-3 tall; heads 4 // -8 // in diam- 

 eter; involucral bracts ovate, often eroded, 

 denticulate at the apex and pubescent below, 

 imbricated in 4 or 5 series; receptacle pubescent 

 with many-celled hairs; flowers 2" high, densely 

 woolly at the base; scales longer than the 

 flowers, acute, white-bearded; as are the spatu- 

 late perianth-segments. 



In swamps, southern New Jersey and Pennsyl- 

 vania to Florida and Texas. Also in Cuba. June- 

 Oct. 



2. DUPATYA Veil. Fl. Flum. 35. 1825. 

 [PAEPALANTHUS Mart. Nov. Act. Leop. 17: Part i, 10. 1830.] 



Perennial or rarely annual herbs, our species with the habit of Eriocaulon. Stems very 

 short Leaves awl-shaped, tufted. Scapes slender, several-angled, erect, twisted in growth, 

 sheathed at the base by a long acute bract. Flowers androgynous, in globular or hemi- 

 spheric heads, each in the axil of a scale or the scales sometimes obsolete. Involucral 

 bracts imbricated in 3 or 4 series. Perianth of 2 series, each of 2 or 3 segments in the stami- 

 nate flowers, the outer segments distinct, the inner connate; stamens 2 or 3, inserted on the 

 inner perianth and opposite its lobes. Pistillate flowers with the outer segments distinct, 

 the inner often connate above the 2-celled, 2-3-ovuled ovary; style cleft into 2 or 3 entire or 

 2-cleft sligmas. Fruit a 2-3-celled, 2-3-seeded capsule, loculicidally dehiscent. [Name in 

 honor of Dupaty.'] 



About 21 5 species, mostly natives of tropical America. Only the following is known in the 

 I nited States. 



