TROPICAL AMERICAN COMPOSITAE. 



41 



ScHizoTRiCHiA EUPATORioiDES Benth. in Benth. & Hook. f. Gen. ii. 

 410 (1873). A specimen of this rare and highly interesting generic 

 monot\'pe has been found among some Eupatoriums kindly lent to the 

 writer from the New York Botanical Garden. Although unidentified, 

 this specimen, collected in Peru by Mathews and corresponding in all 

 described details with Bentham's clear diagnosis, is with scarcely a 

 doubt a part of the original material secured by Mathews at Chacha- 

 poyas about 1836. Bentham in his treatment (1. c.) places the genus 

 among the Hclenicac, but adds at the end the remark that the plant 

 might perhaps rather heXong to Euputorium. However, its short, blunt, 

 and strongly recurved style-branches, its in^'oluc^al scales marked with 

 the immersed elongated glands characteristic of certain Hclcnieae, the 

 subterete achenes, and the peculiar pappus of fimbriate scales all are 

 foreign to or very unusual in the Eupatorium tribe, with which it cer- 

 tainly can have nothing to do. 



Although Bentham gives a somewhat detailed generic character and 

 mentions a specific name, he gives no specific diagnosis. To place the 

 plant upon a somewhat more regular footing in this regard the following 

 brief character may be put on record : 



S. EUPATORIOIDES Benth., 1. c, lignescens paullo pubescens; ramis 

 dichotomis subteretibus foliosis; foliis elliptico-ovatis crenulatis tenui- 

 bus apice rotundatis et mucronatis basi rotundatis penniveniis 2-2.5 cm. 

 longis 1-1.5 cm. latis breviter petiolatis; cymis sessilibus laxis composi- 

 tis; bracteis minutis squamiformibus, pedicellis filiformibus glabris 

 usque ad 1.5 cm. longis; capitulis ca. 8 mm. altis et crassis; involucri 

 squamis principibus ca. 8 elliptico-oblongis tenuibus glabris subaequali- 

 bus dorso cum glandulis fla\-idis elongatis munitis; flosculis ut a Benth- 

 amio descriptis. — Peru: Chachapoyas, Mathews. In habit somewhat 

 suggesting Porophyllmn. 



