BULLETIN 



OF THE 



TORREY BOTANICAL CLUB 



Vol- IX.l New York, December, 1882. [No. 12 



Note on Holozonia filipes. 



By Edward Lee Greene. 



While 



was unexpectedly favored with an opportunity of visiting both of 

 the localities whence my specimens had been derived. The fuller 

 knowledge thus obtained calls for some alteration in the character 

 printed in the October number of this journal. The pappus is found 

 to be extremely variable, and that of the disk-flowers often wanting 

 altogether. But the constant presence of that, of the ray-akenes, 

 taken with the great number of flowers in the head (thrice as many as 

 in Lagophylla)y the perennial root and opposite leaves unite to form a 

 generic type as distinct from LagophylUxy on the one hand, as from 

 Hemizonia on the other. The following will be found a more satis- 

 factory and complete description than that given on page 122 of this 



volume: 



HOLOZONIA, Greene, /. c 



Plead heterogamous, with 6-?> pistillate, fertile rays, and 16-20 

 hermaphrodite but sterile disk-flowers. Involucre of as many her- 

 baceous scales as there are ray-flowers, each scale completely and 

 closely enfolding its obovate-oblong, obcompressed, smooth akene. 

 .Receptacle small, flat; its chaff united into a io-12-toothed cup 

 enclosing the disk-flowers. Corollas white ; those of the ray purplish 

 outside, deeply cleft into 3 linear divisions, open all day; those of the 

 disk 5-lobed. Pappus of the ray a hyaline saucer-shaped crown, 

 whose margin is either entire, or sharply toothed, or beset with short 

 bristles; of the disk, two or more long, extremely slender, deciduous 

 bristles, with a more or less chaffy-dilated base, sometimes reduced 

 to one or more minute scales, often wholly wanting. 



Holozonia fiupes, Greene, /. c. — Perennial, spreading by numer- 

 ous creeping rootstocks; stems 2 ft. high, simple below, above diffusely 

 paniculate; leaves linear, entire, those on the lower half of the stem 

 all opposite, sessile, soft-villous; those of the branches alternate, 

 much reduced in size, glandular; heads on slender pedicels, closely 

 resembling those of Hemizonia luzulaefolia. Abundant along moun- 

 tain streamlets east of Napa Valley, California; its rootstocks imbed- 

 ded among stones, even in the midst of running streams; flourishing 

 from May to November. 



w 



A List of Grasses collected by Mr. C. G. Pringle in Arizona and 

 California, with descriptions of those species not already described 

 in American publications.* 



47. Deyeuxia varia, Kth. {Calamagrostis, DC.) 



Mountains about the head-waters of the Sacramento River. Alt., 



5,000 ft. August. 



* Continued from page 105. 



