The Flora of the Cayuga Lake Basin 53 



2. Triglochin L. 

 a. Fruit oblong or ovoid, rounded at the base ; carpels usually 6, rarely 3. 



1. T. maritima 

 a. Fruit linear or clavate, tapering to a subulate base ; carpels 3. 2. T. palustris 



1. T. maritima L. 



Brackish marshes or bogs; rare. June-July. 



Miller Bog, Spring Lake (F. P. Metcalf, L. Griscom, & A. H. Wright) ; West- 

 bury Bog (K. M. IV. & F. P. Metcalf). 



In salt marshes along the coast from Lab. to N. J., and in saline places across the 

 continent to Alaska and Mexico. Found also in Eurasia and n. Africa. 



2. T. palustris L. 



Marshy or springy places, mostly in marl, also possibly in brackish soils ; rare. 

 June-Aug. 



Junius marl ponds (D. !) ; e. edge of Crusoe Prairie (A. J. E. & F. P. Metcalf). 



Greenland to s. Me. along the coast, and inland along the St. John and St. Lawrence 

 Rivers, to the Great Lakes; thence westw. to Colo, and Alaska. Found also in 

 Eurasia. 



16. ALISMACEAE (Water Plantain Family) 

 a. Flowers perfect; stamens 6-9; carpels in a ring. 1. Alisma 



a. Flowers monoecious ; stamens many ; carpels in a head. 2. Sagittaria 



1. Alisma L. 

 a. Corolla 7-13 mm. wide ; fruiting head 4-7 mm. in diam. ; achenes 2.2-3 mm. long. 



1. A. Plantago-aquatica 

 a. Corolla 3-5.5 mm. wide ; fruiting head 3-4 mm. in diam. ; achenes 1.5-2 mm. long. 



la. A. P., var. parviflorum 

 1. A. Plantago-aquatica L. (A. Plantago, var. americamim, of Cayuga Fl. A. 

 subcordatum of Britton & Brown's 111. Flora.) Water Plantain. 

 Muddy ditches and swamps, mostly in clayey and alluvial soils with no apparent 

 relation to lime content ; frequent. July 20-Aug. 

 Ithaca flats ; Forest Home ; and probably elsewhere. 



Que. and N. S. to B. C, southw. to N. Y., (Del.?), N. Dak., and Calif., including 

 the Atlantic Coastal Plain. 



A recent study of a large quantity of material does not seem to support Britton's 

 contention that the American and the European plants are specifically distinct. 



la. A. Plantago-aquatica L., var. parviflorum (Pursh) Farwell. (Rept. Comm. 

 Parks and Boulev., Detroit, 11:44. 1900.) 



In situations similar to the preceding; frequent. 



Summit Marsh; Ithaca flats; Taughannock Gorge; n. e. of Asbury; and prob- 

 ably elsewhere. 



N. S. to Minn., southw. to Fla. and Tex., including the coast. 



2. Sagittaria L. 

 a. Leaves sagittate or hastate (very rarely with 1-2 elliptical leaves in S. latifolia, 

 forma diversif olia) ; fertile heads pedicelled. 

 b. Style papilliform ; beak a tiny erect point from a notch at one corner of the 

 rounded summit of the achene ; leaves sagittate ; blades broad, abruptly acute, 

 rarely more than 10 cm. long. 1. 5". ciineata 



b. Style subulate or longer ; beak triangular or usually subulate, from one-half 

 the diam. to longer than the diam. of the achene, incurved usually at right 

 angles. 

 c. Blade acute; middle lobe 1.4 or more times as long as broad. 



2. 6*. latifolia 



