RvDBERG : Notes on Philotria Raf. 463 



Hatchery, Wyo., 1898, Aven Nelson S374, pistillate ; Lee's Lake, 



Colo., 1897, C.^. Crandall 242J, staminate ; 1896, 2^21, fruit; 



Rio Grande, Alamosa, Colo., 1896, C. L. Shear 3746, staminate 



and pistillate; Wadsworth, Nev., 1887, Tracy & Evans 47 j, 



pistillate. 



Apalantiie Schweinitzii Planch. Ann. Sci. Nat. Bot. IIL 11 : 76. 



1849. 



Planchon distinguishes the genus Apalanthe from Anacharis 

 by the hermaphrodite instead of dioecious flowers. Of how little 

 value these characters are as generic distinctions may easily be 

 settled by field work. From the description, this must be iden- 

 tical with Scrpiada occidentalis Pursh. Of course, it is also Elodca 

 Sc/nveinitcii CdiS,^. Jahrb. Wiss. Bot. i : 468. 1858. 



Elodea latifolia Casp.; Jahrb. Wiss. Bot. i: 467. 1858. 



This was described from sterile material collected by Schweinitz. 

 It was characterized by broad ovate-oblong leaves and rounded 

 toothed stipules. Why is this not the typical Elodea canadensis 

 Michx.? 



Udoka verticillata ? minor Engelm.; nndev Ajiacharis Nnttallii 



Casp. Jahrb. Wiss. Bot. i : 465. 1858. 



As stated before, Caspary included in Anacharis Niittallii the 

 specimens collected by Engelmann near St. Louis, Mo., and he 

 cited Engelmann for the main part of the description of the flowers. 

 I think, however, that Engelmann's plant is distinct from both the 

 plant described by Nuttall and the plant collected by Torrey in 

 New Jersey, which is the only one cited by Planchon. It is closely 

 related to Philotria angjtstifolia (Muhl.) Britton, differing mostly in 

 the size of the plant and the flowers. The spathe of the stami- 

 nate plant is subglobose, 2 mm. long ; sepals ovate ; petals nar- 

 rowly ovate, 1.5 mm. long ; stamens 9, anthers scarcely i mm. 

 long ; spathe of the pistillate plant linear-tubular, i cm. long, 0.5 

 mm. thick ; tube of the flower very slender, 3-6 cm. long ; sepals 

 and petals ovate, 1-1.5 mm. long ; stigmas 3, club-shaped, bifid ; 

 leaves linear, acute, 5-8 mm. long, i mm. wide. This species is 

 represented by the following specimens: St. Louis, Mo., 1845, 

 Engelmann, pistillate and staminate plants, 3 sheets ; Banks of 

 Mississippi, Oquawka, 111., //. ^V. Patterso7i, pistillate ; Lexing- 



