19313]  Blake,— Six Weeks’ Botanizing in Vermont,— I 159 
to lanceolate or oval-oblong with two narrow acute hastate or sagittate 
basal lobes, the presence of the latter distinguishing it from all other 
forms except elliptica.— Seen only from Ontario, Massachusetts, 
New York, Delaware, Illinois, Missouri, and Vermont: Burlington, 
July-August 1911, Blake 1860, 2430; mud flats of Hinesburg Pond, 
alt. 684, Hinesburg, Blake 2595; Little Otter Creek, Ferrisburg, 10 
Aug. 1880, C. E. Faxon. 
2. S.nkETEROPHYLLA f. elliptica (Engelm.) n. comb. S. heterophylla 
var. elliptica Engelm. in Gray, Man. ed. 2. 439 (1856).— Leaves 
broadly elliptical, some of them with very acute arcuate-sagittate 
basal lobes, 8-10.5 em. long, 5-9 em. wide.— Specimens examined: 
MassacHUsETTs: Lowell, 9 Aug. 1882, Manning; MISSOURI: St. 
Louis, Sept. 1846, Engelmann. 
*3. S. HETEROPHYLLA f. rigida (Pursh) n. comb. S. rigida Pursh 
l. c. 397 (1814). S. heterophylla var. rigida Engelm. l. c. (1856). — (7?) S. 
heterophylla var. angustifolia Engelm. l.e. (7). S. rigidia var. Engel- 
manni Farwell, Ann. Rep. Comm. Parks Detroit, xi. 44 (1900).— 
Leaves entire, lance-linear to oval, acute to acuminate at both ends, 
or rounded at base in the broadest-leaved specimens.— The common- 
est form, represented in the material examined from Quebec and Maine 
to Delaware, west to Minnesota, with the following from VERMONT: 
L. Champlain, Alburg, 1878, Pringle; shore of Shelburne Pond, 
Shelburne, Blake 2377; Malletts Bay, Colchester, Blake 2649; Ferris- 
burg, 1879, Brainerd. 
*4. S. HETEROPHYLLA f. fluitans (Engelm.) n. comb. — S. hetero- 
phylla var. fluitans Engelm. 1. e. (1856).— Leaves all linear, or phyl- 
lodial and bladeless.— Specimens examined: VERMONT: Graveyard 
Point, North Hero, 2 Aug. 1899, Brainerd; L. Champlain, Aug. 1880, 
C. E. Faxon; shore of Maquam Bay, Swanton, 28 Aug. 1911, Blake 
3191; Winooski R., Burlington, 2 Aug. 1911, Blake 2427; MassacHu- 
sETTS: Sheffield and Stockbridge, Aug. 1902, Hofmann. 
*S. LATIFOLIA Willd. f. GRactLIS (Pursh) Rob. Along the Winooski, 
Essex Junction; shore of L. Champlain, Burlington. 
CENCHRUS CAROLINIANUS Walt. Dry soil along railroad near Essex 
Junction station; in sand beside road, Essex. 
DANTHONIA COMPRESSA Aust. Wooded hillside, Essex Junction. 
This and the next determined by Mr. F. T. Hubbard. 
*ELYMUS AUSTRALIS Scribn. & Ball. Edge of woods along Winooski 
River, alt. 235, Essex Junction, 21 July (Blake 2043). Previously 
collected in the state at Jamaica by L. A. Wheeler (see RHODORA, 
March 1912). 
*ERAGROSTIS PECTINACEA (Mx.) Steud. Sand bank, along railroad 
alt. 340, Essex Junction, 25 July (Blake 2176). An interesting oc- 
