GENUS 5. 



WATER PLANTAIN FAMILY. 



99 



Filaments much longer than the anthers ; achene with 5-7 tuberculate or prominently 

 toothed crests. 17. S. lorata. 



i. Sagittaria longirostra (Micheli) J. 



G. Smith. Long-beaked Arrow-head. 



Fig. 231. 



Sagittaria sagittaefolia var. longirostra Micheli 



in DC. Monog. Phan. 3: 69. 1881. 

 Sagittaria longirostra J. G. Smith, Mem. Torn 



Club, 5: 26. 1894. 



Monoecious, glabrous, scapes erect, rather 

 stout, i*-3 tall. Leaves hastate or sagittate, 

 4/-I2' long, abruptly acute at the apex, the 

 basal lobes ovate or ovate-lanceolate or linear, 

 acute, one-third to one-half the length of the 

 blade; scape usually longer than the leaves, 

 6-angled below ; bracts triangular-lanceolate, 

 acuminate, 7 "-15" long, longer than the fertile 

 pedicels; petals 8" -14" long; filaments gla- 

 brous; styles curved, twice as long as the 

 ovaries ; achene obovate, about 2" long, winged 

 on both margins, the ventral margin entire or 

 undulate, the dorsal eroded, its sides with 'a 

 short crest, its beak stout, erect or recurved. 



In swamps and along ponds. New Jersey and 

 Pennsylvania to Florida and Alabama. July-Sept. 



2. Sagittaria Engelmanniana J. G. Smith. En- 

 gelmann's Arrow-head. Fig. 232. 



Saggittaria variabilis var. (?) gracilis S. Wats, in A. Gray, 

 Man. Ed. 6, 555. 1889. Not Engelm. 



Sagittaria Engelmanniana J. G. Smith, Mem. Torn Club, 5 : 

 25- 1894. 



Monoecious, glabrous, scape erect or ascending, slender, 

 8'-2o' high. Leaves narrow, ii'-8' long, i"-4" wide, acute 

 or obtuse at the apex, the basal lobes narrowly linear, 

 acuminate, one-third to one-half the length of the blade; 

 scape striate, about as long as the leaves ; bracts lanceo- 

 late, acute, shorter than the slender fertile pedicels, 4" -6" 

 long ; flowers 7" -12" broad ; filaments glabrous ; style about 

 twice as long as the ovary; achene cuneate, 2" long, winged 

 on both margins and with 1-3 lateral wing-like crests on 

 each face, the beak stout, erect, about \" long. 



In shallow water, Massachusetts, Connecticut and Rhode 

 Island. Arrow-leaf. Aug.-Sept. 



3. Sagittaria cuneata Sheldon. Arum-leaved 

 Arrow-head. Fig. 233. 



Sagittaria cuneata Sheldon, Bull. Torrey Club 20 : 283. 



-, . 



Sagittaria arifolia Nutt. ; J. G. Smith, Rep. Mo. Bot. Card. 



6: 32. 1894. 



Sagittaria arifolia stricta J. G. Smith, Rep. Mo. Bot. Card. 



6: 34. 1894. 



Glabrous or nearly so, terrestrial or submerged, scape 

 weak, ascending or floating, -2 long. Leaves sagit- 

 tate, linear-lanceolate to ovate, i:i'-61' long, acute or 

 acuminate, long-petioled ; phyllodia, when present, of 

 two kinds, the one petiole-like and about as long as the 

 leaves, the other lanceolate and clustered at the base of 

 the plant; bracts lanceolate or linear-lanceolate, or 

 rarely ovate-lanceolate; flowers 6"-i2" broad; achene 

 cuneate-obovate, \"-il" long, the beak minute, erect 

 over the ventral wing. 



In mud or water, Nova Scotia and Maine to Quebec, 

 British Columbia, Connecticut, Kansas, New Mexico and 

 California. July-Sept. In the first edition both figures 

 196 and 197 and the descriptions apply to this species. 



