44 Karl M. Wiegand and Arthur J. Eames 



Subdivision II. ANGIOSPERMAE 



Class I. MONOCOTYLEDONEAE 



12. TYPHACEAE (Cattail Family) 



1. Typha (Tourn.) L. 



a. Staminate and pistillate parts of the spike contiguous ; pollen grains in 4's ; stigma 

 fan-shaped ; sterile flowers shorter than the hairs ; lower leaves 12-23 mm. wide ; 

 pistillate spikes in fruit 2.5 cm. in diam. 1. T. latifolia 



a. Staminate and pistillate parts separated by a naked interval ; pollen grains single ; 

 stigma linear ; sterile flowers scarcely shorter than the hairs, their cellular struc- 

 ture less evident. 

 b. Plant 1-1.5 m. high; lower leaves 3-7 mm. wide; pistillate spike in fruit 10-17 



mm. in diam., 8-13 cm. long. 2. T. angustifolia 



b. Plant 2-3.5 m. high; lower leaves 9-15' mm. wide; pistillate spike in fruit 20-23 

 mm. in diam., 15—25 (30) cm. long. 2a. T. a., var. elongata 



1. T. latifolia L. Broad-leaved Cattail. 



Alluvial marshy places, rarely invading peat bogs ; common. June. 

 Very abundant in the large marshes near Cayuga Lake ; occasional in all the town- 

 ships away from the lake. 

 Throughout temperate N. A. ; cosmopolitan. 



2. T. angustifolia L. Narrow-leaved Cattail. 



Marshy places, mostly alluvial and often brackish ; frequent. June-July 10. 



Swampy spot in field two miles n. of Danby ; near Etna (D. !) ; Mud Creek, Free- 

 ville; w. shore of the Inlet, near its mouth (D.) ; sparingly on the Inlet Marshes; 

 Myers Point ; Union Springs ; Black Brook, Tyre ; abundant on the Cayuga and 

 Canoga Marshes (D. !). 



N. S. to Fla., mainly along the coast; also inland, principally about the Great 

 Lakes ; almost cosmopolitan. 



2a. T. angustifolia L., var. elongata (Dudley) Wiegand. (See Rhodora 26:1. 

 1924. T. latifolia, var. elongata Dudley, of Cayuga Fl. T. a., var. virginica 

 Tidestrom.) 



In the larger marshes ; common. June-July. 



" Occurs with the type form in large thick masses near the shore or in the water 

 on Canoga and Cayuga Marshes and north of Hill's Branch. It is -the principal form 

 cut for chair-bottoms, and is carried away from Cayuga in considerable quantities 

 for this purpose" (D.) ; Inlet Marshes; Union Springs; Montezuma Marshes; 

 Black Lake. 



Along the Atlantic coast and about the Great Lakes. 



13. SPARGANIACEAE (Bur Reed Family) 

 1. Sparganium (Tourn.) L. 

 a. Fruit broadly obovoid, sessile, truncate or retuse at the summit, umbonate, 4-8 

 mm. in diam. ; beak of the ovary in flower broad and stout at base ; stigmas 2, 

 each 2-3 mm. long, filiform; anthers 1.5-2 mm. long; sepals nearly equaling the 

 fruit; plant tall, 8-13 dm. high; inflorescence branched. 1. 5". eurycarpum 



a. Fruit fusiform, short-pedicelled, acute or beaked ; beak in flower less coarse and 

 less deltoid; stigma 1, 0.3-2 mm. long; anthers 0.5-1 mm. long; sepals much 

 shorter than the fruit; plant lower. 

 b. Fruit 5.5-14 mm. long, fusiform, with a distinct slender beak; stipe 1-4 mm. 

 long; stigma linear, 1-2 mm. long; mature pistillate heads 12-35 mm. in diam.; 

 staminate heads 2 or more ; plant erect. 



