FROGSBIT FAMILY. 333 



simple, the fertile flowers numerous; bracts lanceolate, acute or acuminate, -^^ to -,^ 

 Inch lout;, slightly conuate at the base; fertile pedicels J to I inch long; fruiting 

 heady,; toj-iuchin diameter; acheuium almost beakless, V,; iucli long, with a narrow 

 dorsal crest, the sides not costate nor winged. Phyllodia obhiuceolate, long-acute, | 

 to f inch wide, 4 to 12 inches long. ^ * * Dedicated to the venerable Southern 

 botanist, Doctor Chapman, by whom it Avas first collected." 



Louisianian area. Western Florida. 



Alabama: Marshes, stagnant pools, and wet banks of creeks. Mobile County, 

 Kelly's pond, marshes Mobile Kiver. Flowers April to June. Mohr, 1880. 



Type locality : '"In a creek on the road to Mariana, 3 or 4 miles from Ocheesee, 

 west Florida;' also collected by Dr. Mohr, 1880, * * * 1884, in the A'icinity of 

 Mobile, Ala.'' 



Herb. Geol, Surv. Herb. Mohr. 



Sagittaria mohrii .1. G. Smith, Bull. Torr. Club, 24 : 19, /. 2S9. 1897. 



Mohr's Sagittaria. 



Leaves lanceolate-linear, long-attenuate to the acnte apex, tapering gradually at 

 the base to the slender, ascending petioles, 15 to 20 inches long, f to ^ inch wide; scape 

 shorter than the leaves, simple, triquetrous above, weak, reclining, decumbent aft<'r 

 flowering, frequently ripening its Iruit under water, with 6 to 8 verticils, the inflo- 

 rescence narrowly pyramidal; bracts f to ^ inch long, connected to the middle; fer- 

 tile pedicels spreading, somewhat longer than the sterile, in 3 or 4 verticils, | to ^ 

 inch long; sepals oblong, obtuse, n, to ^ inch long; stamens 9 to 12, anthers broadly 

 elliptical ; achenium ]\ inch long, obli(iuely cuueate with a short lateral beak, creuu- 

 lately crested and broad-winged on both margins, laterally unicostate or narrowly 

 winged; fruiting head globose, ^ to ,% iuch in diameter. Plate III. 



Partially submerged aquatic, growing in tufts, at the nodes of horizontal stolons. 



First collected at Mobile by Charles Mohr, August 16, 1895. 



Alabama : Coast plain. Deep muddy ditches and shallow ponds. Mobile, in the 

 open flats forming the watershed between Dog and Mobile rivers (southwestern 

 suburbs). In shallow water and partially exsiccated ground. 



Plants were found with the leaf blade narrowly linear, and mostly wanting, the 

 leaves reduced to strict triangular jihyllodia. Abundant, August 20, 1896. 



Tvpo locality: "Muddy shallow ponds near the western suburbs of Mobile citv, 

 August 18, 1895." 



Type in Herb. Mo. Bot. Gard. 



Herb. Geol. Surv. Herb. Mohr. 



Sagittaria platyphylla (Eugelm.) J. G. Smith, Rep. Mo. Bot. Gard. 6 : 55, f. 26. 1894. 



Broad-leaved Sagittaria. 



Sagittaria graminea var. jylattjphyJla Engelm. in Gray, Man. ed. 5, 494. 1867. 



Carolinian and Louisianian areas. Missouri to Texas; east from Mississipiji and 

 Louisiana to Florida. 



Alabama : Coast plain. Muddy ditches, ponds. Mobile. Flowers June to Sep- 

 tember. Frequent. 



Type locality : "Found farther south [than .S. (/j'amiwea]." Smith's locality: "In 

 swamps and ponds from Texas to Mississippi and northward to the 'sunken lands' 

 of Missouri." 



Herb. Geol. Surv. Herb. Mohr. 



VALLISNERIACEAE. Frogsbit Family. 



PHILOTRIA IJaf. Am. Month. Mag. 2 : 175. 1818. 



(Elodea Michx. Fl. Bor. Am. 1:20. 1803. Not Elodes Adans.) 

 (Udora Nutt. Gen. 2 : 242. 1818.) 



Five species, aquatic perennial herbs of temperate and tropical regions. 

 Philotria canadensis (Michx.) Britton, Science, ser. 2, 2:5. 1895. Water Weed 



Elodea canadensis Michx. Fl. Bor. Am. 1 : 20. 1803. 



Gray, Man. ed. 6, 496. Chap. Fl. 450. Wats. Bot. Calif. 2 : 129. Coulter, Contr. 

 Nat. Herb. 2:421. 



Canadian zone to Louisianian area. Quebec and Ontario to Oregon and California; 

 from New England south to New York, New .lersey, and North Carolina. 



Alabama: Coast region. In gently flowing deep water. Mobile County, estuary 

 Mobile River. Rare. 

 Type locality: "Hab. in rivulis Cauadae." 

 Herb. Geol. Surv. Herb. Mohr. 



