WATEE-PL ABSTAIN FAMILY. 331 



raents two-thirds longir than the anthers, strongly villous near the base; ovary nar- 

 rowly winged, with a slender erect style; flowers fully three-fourths inch across. 

 Resembling form b (J. G. Smith) of S. latifolia; at once distinguished, however, by 

 the characters given above. 



Louisianian area. 



Alabama: Lower Pine region, deep ditches. Mobile, June, 1896. On a second 

 visit to the same locality to get specimens with mature achenia the plants were 

 found to have been destroyed by the cleaning of the ditch. 



Type locality: " Deep muddv borders of marsh on the Mobile Kiver." 



Herb. Geol. Surv. Herb. Mohr. 



Sagittaria niontevidensis Cham. & Schlecht. liinnaea, 2:136. 1827. 



La Plata Kiver Arrowhead. 



.J. G. Smith, Rep. Mo. Pot. Gard. 6 : 57, t. 20. 



"Monoecious; petioles stout, rigid, erect, ascending; leaves sagittate, acute or 

 obtuse, 4 to 20 inches long and broad, basal lobes acute, acuminate, widely divergent, 

 glabrous above, sparsely scabrous on the nerves below; scape usually simple, stout, 

 often 2i to 3 inches iu diameter at the base ; verticils numerous, more or less approxi- 

 mate, 2 to -1 lower ones fertile ; bracts connate at the Ijase, lanceolate, long-acuminate, 

 the upper undeveloped portion of the scape appearing comose with their projecting 

 tips; staiuinate pedicels slender, ascending, f to 1^ inches long, longer than the fer- 

 tile; flowers large, the sepals broadly ovate, obtuse, finch wide, ^ inch long; petals 

 obovate, larger than the sepals; stamens very many, the narrow glandular tilaments 

 longer than the linear-oblong anthers ; achenia -jV to .^.i inch long, narrowly quadrate, 

 obovate, winged on both margins, with a short, slender, obli(]ue beak, aud a promi- 

 nent 8ul)-epidermal resin passage on each side above; fruiting head large, f to \l 

 inches in diameter.'' Established as a ballast plant iu California. 



South America. 



Louisianian area. Coast of North Carolina. 



Alabama: Coast plain. Marshes and ditches. Mobile County, river marshes and 

 ditches about the city. Flowers July to September. Frequent. 



Type locality : "Montevideo et Rio grande do Sul."' 



Herb. Geol. Snrv. Herb. Mohr. 



Sagittaria longirostra (Micheli) J. G. Smith. Mem. Torr. Club, 5 : 26. 1893. 



Long-beaked Arrowhead. 



Saqittaria sagitiifolia xar. {f) longirostra Micheli in DC. Monogr. Phan. 3 : 69. 1881. 



Britt. & Brown, 111. Fl. 1 : 88. 



Carolinian area. Southern Delaware, Pennsylvania, and Kentucky. 



Alabama: Lower hilla. Coosa County, Stewardsville {Dr. E. A. Smith). July. 

 Rare. 



Type locality: "In Alabama (Drummond, 1832)." 



Sagittaria longirostra australis J. G. Smith, Bull. Torr. Club, 24 : 20, t. 291. 1897. 



Southern Long- beaked Arrowhead. 



Plant 6 to 8 inches high, the scape about 20 inches long; leaves ovate-elliptical, 

 obtuse, 3 to 4 inches long, basal lobes obtuse; fertile iiedicels about I inch long, 

 exceeding the bracts; achenium less than \ inch long. Plate II. 



Carolinian area. 



Alabama: Mountain region. Shaded swampy creek banks. Cullman County. 

 Type locality: "Collected by Dr. Charles Mohr, Cullman, Ala., August 4, 1896." 

 Tyi>e iu Herb. Mo. Bot. Gard. 

 Herb. Geol. Surv. Herb. Mohr. 



Sagittaria subulata (L.) Buchenau, Abh. Nat. Ver. Brem. 2 : 49. 1871. 



Alisma subulata L. Sp. PI. 1 : 343. 1753. 



Sagittaria iuisiUa Nutt. Gen. PL 213. 1818. 



S. natans var. lorata Gray, Man. ed. 6, 555. 1890. Not Chap. 



Gray, Man. 1. c. Chap. Fl. 449. 



Carolinian and Louisianian areas. New York, coast of New Jersey to Florida. 



Alabama: Coast plain. Sandy tidewater flats. Mobile County, Frascati. Flow- 

 ers in September. Rare. One-half inch high. 



Type locality: "Hab. in Virginia." 



Herb. Geol. Surv. Herb. Mohr. 



Sagittaria subulata natans (Michx.) J. G. Smith, Rep. Mo. Bot. Gard. 44. 1894. 



Floating Arrowhead. 

 Sagittaria subulata Michx. Fl. Bor. Am. 2 : 190. 1803. 

 ^\ subulata var. lorata Chap. Fl. 449. 1860. 



