April, 1913.] 
Liliales of Ohio. 
123 
4. Smilax pseudo-china L. Long-stalked Greenbrier. A 
glabrous climbing woody vine, commonly covered with numerous 
slender prickles. Branches more or less angled; petioles 1-1 in. 
long; leaves ovate, abruptly acute at the apex, subcordate at the 
base, usually 1-nerved; with 12-40 flowers; fruit a black berry. 
In thickets. General. 
5. Smilax glauca Walt. Glaucous Greenbrier. A climbing 
woody vine with terete stem and four-angled branches and glau¬ 
cous leaves. Stem often prickly; peduncle Rf-l in. long; leaves 
ovate, acute or cuspidate at the apex, sometimes cordate at the 
base, five-nerved; umbel 6-12 flowered; fruit a blue-black berry. 
In dry, sandy soil. General, but more abundant in the south. 
6. Smilax rotundifolia L. Round-leaf Greenbrier. A gla¬ 
brous woody climber with a terete, woody stem and a square 
branch usually prickly. Petioles less than in. long; leaves 
thick, shining when mature, acute or acuminate at the apex, 
obtuse or cordate at the base, entire or very slightly denticulate, 
5 nerved; peduncles flattened; umbel 6-25-flowered; fruit a black 
berry. In woods and thickets. Cuyahoga, Belmont, Hocking, 
Fairfield, Licking, Lorain. 
Pontederiaceae. Pickerel-weed Family. 
Perennial, aquatic herbs with broad, petioled leaves or long, 
grass-like leaves. Flowers bisporangiate, showing some zygo- 
morphy, solitary or spiked with a spathe; perianth of six united 
segments; stamens 6 or 3, united with the perianth; ovulary tri- 
locular or unilocular; stigma terminal; fruit a many seeded capsule; 
endosperm of the seed copious, mealy. 
1. Spike many-flowered, with a spathe-like bract, perianth two-lipped, 
stamens 6. Pontederia. (1) 
1. Inflorescence one to several-flowered, perianth with a slender tube, 
perianth segments about equal, stamens 3. Heteranthera. (2) 
1. Pontederia L. Pickerel-weed. 
Herbs with thick leaves, long sheathing petioles and hori¬ 
zontal rootstock. Inflorescence a spike with numerous, eph¬ 
emeral, blue flowers; perianth two lipped; stamens 6, united with 
the perianth; ovulary triiocular, 2 locules without ovules. 
1. Pontederia cordata L. Pickerel weed. A rather stout, 
erect herb with ovate or cordate, sagittate leaves, with apex and 
basal lobes obtuse, the sheathing petiole often having long ap¬ 
pendages; spathe and inflorescence pubescent; flowers blue, the 
upper lobe having two yellow spots on the middle segment. 
Borders of ponds and streams. Erie, Cuyahoga, Geauga, Sum¬ 
mit, Portage, Wayne, Lucas, Fulton, Defiance, Licking, Perry. 
Pontederia cordatalancifolia (Muhl.) Mor. Similar to the 
preceding but with lanceolate leaves, rounded or narrowed at 
the base. Summit County. 
