188 Plante Lindheimeriane. 
(610.) L. auarum, var. (LaNcEoLATUM), Torr. & Gray, FI. 
1. p. 481. L. lanceolatum, Ell. Sk. 1. p. 544. Wet prai- 
ries, on the Pierdenales. May.— A form with dwarf stems, 
a foot or less in height, from long, and deeply subterranean 
root-stocks or stolons. 
+ L. auatum, var. 7. Torr. & Gr. 1. c.— On the Cibolo, — 
Leaves mostly alternate. 
+ L. auarum, var. LINEARIFoLIuM: caulibus ramosissimis ; 
foliis linearibus plerisque alternis, floralibus calyce subzequa- 
libus. — Rocks in the Cibolo River. This and the var. ovali- 
folium are two extreme forms, on either hand, of what I take 
to be one polymorphous species; for which the name L. 
lanceolatum, /l., would be much more appropriate than that 
of Pursh. They may embrace several of the tropical Ameri- 
can species in the books; but they pass into one another 
in such a way that Dr. Engelmann and I can fix upon no 
reliable distinguishing characters. 
+ Ammannia Latirouia, Linn.; Torr. & Gr. Fil. 1. p. 480. 
(the A. stylosa, Fisch. & Meyer, Ind. Sem. Hort. Petrop. 7, 
p. 41): var. octandra, staminibus exsertis, stylo brevi incluso! 
A. Texana, Scheele in Linnea, 21, p. 588. Upper Guada- 
loupe. 
ONAGRACEZ:: 
391. Cinornera (Mecaprerium) Missourrensis, Sims, 
Bot. Mag. t. 1592; Torr. & Gr. Fl. 1, p. 500: var. A. foliis 
anguste lanceolatis linearibusve. Megapterium Missouriense, 
Spach. Rocky plains and slopes, on the Pierdenales and 
Upper Guadaloupe, and in the dry bed of the Cibolo, April 
to July; in flower and fruit. Also gathered by Mr. Wright, 
who sends seeds from which the plant has been raised in the 
Cambridge Botanic Garden. ‘Capsule larger or smaller, 
orbicular, or elliptical-oblong; corolla from two to five inches 
in diameter. This runs, by every gradation in the broadness 
of the leaves into the var. g, Lariroiia foliis lato-lanceolatis 
vel ovato-lanceolatis, (A. macrocarpa, Pursh.; Sweet, Brit. 
Fl. Gard. t. 5. Megapt. Nuttallii, Spach.) Nor, with both 
