﻿igi6] NELSON &• MACBRIDE — WESTERN PLANTS 



6a. Lappula texana (Scheele) Britton var. heterosperma 

 (Greene), n. comb.— L. heterosperma Greene, Pitt. 4:94. 1899; L. 

 desertorum Greene, op. cit. 95; L. cucullata A. Nels. Bot. Gaz. 

 34:29. 1902, at least as to specimens cited. — L. cucullata was 

 described as having similar nutlets, but authentic specimens have 

 exactly the nutlets of L. heterosperma. 



Specimens examined: WyoAung: Sandy plains, Fort Steele, Carbon 

 County, June 16, 1900, Aven Nelson (7250); sandy canyon, Birds Eye, Fre- 

 mont County, June 22, 1910, Aven Nelson (9407); Colorado: dry hills, Para- 

 dox, Montrose County, June 13, 1912, E. P. Walker (80); 1864, Parry (3). 



6b. Lappula texana (Scheele) Britton var. homosperma 

 (A. Nels.), n. comb. — L. heterosperma Greene var. homosperma A. 

 Nels. Box. Gaz. 34:29. 1902. 



Specimens examined: Assiniboia: Medicine Hat, July 5, 1894, John 

 Macoun (5806); Montana: Gallatin City, June 20, 1883, F . Lamson Scribner 

 (172); Colorado: New Windsor, Weld County, June 4, 1901, George E. 

 Osterkout (2388); Mesa County, May and June, 1893, H. C. Long. 



6c. Lappula texana (Scheele) Britton var. coronata (Greene), 

 n. comb. — L. coronata Greene, Pitt. 4:94. 1899. — This variety 

 seems to be an extreme desert form of the south, almost too close 

 to the preceding. It is a smaller plant, however, the nutlet margins 

 being inordinately developed and the faces and sides smooth or 

 merely somewhat papillose. A variation of L. Redowskii occurs in 

 Europe which is not unlike this, the nutlets exhibiting the same 

 tendency to smoothness. 



Specimens examined: Arizona: dry plains near Camp Lovell, April 16, 

 1881, C. G. Pringle (362); dry hills, Santa Cruz, April, 1884, W. F. Parish, 

 (164). 



Lappula arida Piper var. Cusickii (Piper), n. comb. — L. 

 Cusickii Piper, Bull. Torr. Bot. Club 29:542. 1902.— Like the 

 species except in the smaller and blue flowers. The forms are 

 entirely similar in aspect and the nutlets are the same. Although 

 the author suggested the possibility that future collections might 

 prove L. Cusickii a synonym of L. arida, the size and color of the 

 flowers of the former seem to remain constant, and therefore it 

 may well be left as a variety. 



