ee et ee eae 
88 MISSOURI BOTANICAL GARDEN. 
no description further than the expression ‘ linear-leaved ;”’ 
Barton Comp. Fl. Philad. i. (1818), 183; Hausskn. 
Monogr. 255, pl. 2, f. 25. — Z. palustre, var. lineare, Gray, 
and Watson, Index, 366.— Bogs, New Brunswick to the 
Selkirk Range (Macoun), south to the Yellowstone Park, 
Indian Territory, Illinois, and Delaware.—Specimens ex- 
amined from Prince Edward’s Island and various parts of 
Canada and British America, Maine, New Hampshire, Mas- 
sachusetts, Connecticut, New York, New Jersey, Pennsyl- 
vania, Delaware, Ohio, Illinois, Wisconsin, Kansas, Indian 
Territory (Bigelow), Nebraska, and the Yellowstone fe- 
gion. The specimens on which Haussknecht extends the 
range of lineare to Oregon doubtless belong to the next 
species. — Plate 12. —Specimens with more lanceolate leaves 
with evident lateral veins, occasionally occur, even inregions 
where Z. palustre is not found, so that they can scarcely 
be looked on as hybrids. 
Var. oLiGaANTHUM (Michx.), (2. oliganthum, Michx. in 
part), of the middle Atlantic region, a simple few-flowered 
form with the opposite leaves more obtuse and less evi- 
dently petioled, may perhaps be distinguished. 
If the custom of replacing Muhlenberg’s names, owing to 
incomplete description, should ever become prevalent, the 
very descriptive name ZH. densum, Raf. Desv. Journ. de 
Bot. ii. (1814), 271, may come to replace the one here 
employed for this species. 
++++ A span to a foot high, usually simple, rather less woody: leaves 
fewer, suberect, chiefly opposite, evidently veined, gradually narrowed 
to a sessile base: flowers few, mostly nodding at first: coma paler. 
11. E. patustre, L.— Quite canescent above with in- 
curved hairs; leaves 25 to 50 mm. long, narrowly oblong or 
exceptionally lanceolate, obtuse or almost truncate ; fruiting 
peduncles often long and slender; seeds fusiform, .4 to 
.5x 1.5 to 2 mm., with prominent scarcely narrowed trans- 
lucent apex. —Sp. i. (1753), 348; Watson, Index, 366; 
Haussknecht, Monogr. 128.— Swamps and wet places, 
