510 PONTEDERIACEJS. (PICKEREL-WEED FAMILY.) 
rate or separable down to the base: after flowering the tube is 
revolute-coiled from the apex downwards, and its fleshy-thicken- 
ed persistent base incloses the fruit. Stamens 6, the 3 lower 
exserted with elongated filaments; the 3 upper (often sterile or 
imperfect) with very short filaments, unequally inserted lower 
own : anthers oval, blue. Ovary 3-celled ; two of the cells emp¬ 
ty, the other containing a single suspended ovule. Utricle 1- 
ce ed, filled with the single seed.— Stout herbs, growing in 
s a ow water, with thick creeping rootstocks, producing erect 
long-petioled mostly heart-shaped leaves, and a 1-leaved scape, 
terminated by a spike of violet-blue ephemeral flowers. Root- 
eaves with a sheathing stipule within the petiole. (Dedicated 
onlcdera, Professor at Padua at the beginning of the last 
century.) 
vl ^ CO / data ’ , L * . Leaves arrow-heart-shaped, blunt; spike 
tifolia p Se? /w? a S ^ at le ‘^k e bract-Var. angustifolia (P. angus- 
heart shan^H triangular-elongated and tapering leaves scarcely 
ZTctT, Sr* ha T-~ Comm0n - July-Sept - Calyx-tube in 
Td withT r 6 l °n thed ridge8 ‘ U PP^ l«be of the perianth mark¬ 
ed with a pair of small yellow spots. 
2. HETERANTHERA, Ruiz & Pay. Mud Plantain. 
ianth salver-form with a slender tube, the spreading limb 
v at equally 6-parted, ephemeral, Soon withering or decay- 
„ ta ^ ns ^ * the 2 upper with the filaments thickened in the 
filn ear ^ n ® ovate (yellow) anthers, the other with a longer 
ther^ en P e , ann? a lar £ er oblong or arrow-shaped (greenish) an- 
tner. Pod incompletely 3-celled, many-seeded. - Creeping or 
lng ow herbs > with chiefly rounded long-petioled leaves, and 
nf i ° W ^ Gd Spathe burst i n g from the sheathing side or base 
l* P T e : powers blue or white. (Name from eV/pa, 
ent, and aurjp , for anther.) 
ed • Tinis, Ruiz & Pav. Leaves round-kidnev-shap- 
streams, S. New York'to^fJh" white ’~ Mudd ^ ™“ r S ins of 
°rk to Ohio and southward. Aug. 
3. SCIIOLLiRA, Schreber( 1789 ). Water Star-grass. 
erianth salver-form, with 6 nearly equal lance-linear spreading 
divisions on a very long thread-like tube. Stamens 3, with simi- 
