44 Contributions from the Gray Herbarium 
“Actinea Torreyana (Nutt.), comb. nov. Actinella Torreyana 
Nutt. Trans. Am. Phil. Soc. ser. ii. vii. 379 (1841). Tetraneuris 
Torreyana (Nutt.) Greene, Pitt. iii. 265 (1898). 
This is an excellent species. The leaves are essentially glabrous 
but the scapes are woolly like those of A. acaulis, var. lanata and 
its forma caespitosa which blossoms about the same time. 
/ ACTINEA LEPTOCLADA (Gray) Ktze., var. Ivesiana (Greene), 
comb. nov. Tetraneuris Ivesiana Greene, Pitt. iii. 269 (1898). 
T. intermedia Greene, Pl. Baker. iii. 29 (1901). T. pilosa Greene 
ex Rydb. Fl. Colo. 379 (1906). TT. arizonica Rydb. N. A. Fl. 
xxxiv. 105 (1915) in large part, not Greene. 
The variety differs principally in the narrower leaves and some- 
what narrower heads. The leaves on the stem are frequently 
fewer and occur nearer the base or are rarely lacking. This form 
connects the species closely with A. acaulis through the variety 
simplex. In Bull. Torr. Club, xxxvii. 443-447 (1910) Rydberg 
devotes several pages to criticism of Nelson’s treatment of this 
genus in the Coulter-Nelson Manual. This work on the whole is 
very much better than that.in the North American Flora. It is 
impossible, for instance, to find T. epunctata (A. acaulis, var. 
simplex) by Rydberg’s key, because the leaves are never glabrous 
(as the key-character states), nor 7’. arizonica because, as shown 
above, the original of this is a tall state of T. acaulis, var. lanata 
and belongs under the heading in Rydberg’s key “ Leaves, scape, 
and involucre decidedly villous.” Rydberg places it next to his 
T. Crandallii under the key-character ‘‘ Leaves glabrous or spat 
ingly villous.” T. Crandallii I have not seen but it is probably 
A. leptoclada or the variety Ivesiana to which Nelson referred 1t- 
T. formosa seems to be merely a luxuriant state of A. leptoc 
since it has the pappus of that species rather than of A. argentea 
which it suggests by virtue of the broad leaves and large heads. 
T.. trinervata Greene Pitt. iii. 267 (1898) is placed by Rydberg 
the A. acaulis group. It is rather to be compared, because of the 
leafy stem, with A. argentea. Indeed it is probably only a narrow" 
leaved form of that species since it has the same pappus and the 
same very strongly 3-nerved leaf-bases. This plant furnishes 2? 
example of the impossibility of drawing a very definite line between 
_ the caulescent and acaulescent species. : 
Acringa scaposa (DC.) Ktze., var. LINEARIS (Nutt.) Robinsom, 
Proc. Am. Acad. xlix. 506 (1913). 


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