854. 
859. 
860. 
861. 
862. 
863. 
864. 
865. 
PLANTAE LINDHEIMERIANAE. 173 
AMBLYOLEPIS SETIGERA DC. L. 302. New Braunfels. 
May 1850. 
“Muskit prairies, 12 mi. S. W. of New Braunfels.” —Pl. Wright. 
1:121. 
AMBROSIA APTERA DC. L. 109. Comanche Spring. 
Aug. 1849. (428). 
A. apTERA DC. L. 533? New Braunfels. July 1851? 
A. APTERA DC. L. 484. (New Braunfels). Nov. 1850. 
A. ARTEMISIAEFOLIA L. var. PANICULATA (Michx.). L. 
171. Comanche Spring. Oct. 1849. A. paniculata 
Michx. Fl. 2: 183. 
A very slender, smoothish, widely branching form with leaves 
less divided than in A. artemisiaefolia L., the segments oblong- 
lanceolate to linear: sterile racemes loosely flowered and heads 
small (2 mm.): fruit small, with inconspicuous lateral tubercles. 
A well-marked variety approaching A. glandulosa Scheele. Linn. 
223 157. 
A. ARTEMISIAEFOLIA L. var. PANICULATA (Michx.) L. 
502. (New Braunfels). Sept. 1850. 
A. psttosTtacHya DC. L. 145. San Antonio. Sept. 
1849. . 
An unusually large coarse form, 6-9 dm. high, with strigose 
pubescent leaves and segments relatively few and long lanceo- 
late-acuminate; sterile racemes elongated and heads about 3 mm. 
diameter. 
A. PSILOSTACHYA DC. var. LINDHEIMERIANA (Scheele). 
L. 390. New Braunfels. Sept. 1850. (429). A. 
Lindheimeriana Scheele. Linn. 22:156. A. coro- 
nopifolia T. & G. var. Gray, Pl. Lind. 2:226. 
Leaves in these specimens vary considerably in pubescence and 
dissection. A well-marked variety. 
AMPHIACHYRIS DRACUNCULOIDES Nutt. L. 474. (New 
Braunfels). Oct. 1850. (422). 
APHANOSTEPHUS RAMOSISSIMUS DC. L. 233. (New 
Braunfels). July 1850. (414). 
A. SKIRROBASIS Trelease. L. 254. (New Braunfels). 
May 1850. (111). 
A. sktRROBASIS Trelease. L. 549. (New Braunfels). 
May 1851. 
