370 ERIOCAULACE^. 



3, SCHOLLERA. Schreb. —SchoMem. 

 (Dedicated to Frederick Adam Scholler, a German botanist.) 



Spathe 1 -flowered. Perianth with a long slender tube ; limb 

 deeply 6-parted. Stamens nearly equal. Anthers similar, ob- 

 long-sagittate. Stigma 3-lobed. Capsule 1 -celled. 



S. graminea Vahl. Leplanthus gramineus Mich. Heteranthera gramiTiea 

 Pursh. 



In flowing streams. N. S. July, Aug. %. — Stem slender, much branched, 

 rooting at the lower joints. Leaves sessile, narrow-linear. Flowers small, pale- 

 yellow, solitary. Stamens usually 3, but sometimes 4, unequal. 



Grass-leaved Schollera. 



Order CXXXV. ERIOCAULACE^.— Pipeworts. 



Flowers bracteate, monoecious or dioecious. Perianth 2 — 6 

 parted, in two rows ; the outer glumaceous ; inner somewhat 

 petaloid. Stamens 3 — 6. Ovary superior, 2 — 3-celled; style 

 very short ; stigmas as many as the cells of the ovary. Capsule 

 2 — 3-celled, loculicidal. Seeds solitary, coated with wings or 

 rows of hairs. — Perennial marsh plants, with linear cellular 

 spongy leaves, and minute flowers which are collected into a 

 head at the summit of the scape. 



ERIOCAULON. Z^mw.— Pipewort. 



(From the Greek epiov, wool, and Kav\os, a stem ; in allusion to the woolly 

 scapes of the species first described.) 



Flowers monoecious, rarely dioecious, collected into a com- 

 pact scaly head. Sterile Fl. in the disk. Perianth 4 — 6- 

 cleft, the inner segments united nearly to their summit. Stamens 

 3 — 6. Fertile Fl. in the margin. Perianth deeply 4-parted. 

 Capsule 2 — 3-celled. 



1. E . septangulare With. : scape slender, 6 — 7-furrowed, smooth; leaves 

 subulate-ensiform, cellular and transversely reticulated ; head small, hemi- 

 spheric ; scales of the involucre obovate, and with the flowers hairy at the 

 summit. E. pellucidum Mich. 



Ponds and swamps. Can. to Penn. Aug. %.— Scape varying in length 

 from 2 or 3 inches to 6 feet, (Torr.) and like the leaves pellucid and cellular. 

 Flowers minute, in a compact head, 4-cleft. Perianth with the outer segments 

 purplish, the inner ones white. Stamens 4. Jointed Pipetvort. 



2. E. decangulare Mich. ; scape lO-furrowed ; leaves ensiform, smooth ; 



head large, depressed-globose ; scales of the involucre oval, acute, of the 



receptacle mucronate. 



Ponds. N.J. to Car. Aug. O;.— -Scape a— 3 feet high. J7ou)ers very white. 



Ten-angled Pipewort. 



