48 



The Botanical Gazette. [February, 



ones equal, very obtuse, more or less scarious marglned: 

 achenes sharply 5-angled, somewhat hairy, especially on the 

 angles. — Plate V. 



J 



Heyde 



To decide the affinities of this genus is very perplexing, 

 The style characters are those of EUPATORIACE^, and its pappus 

 coalesced at base into a prominent ring suggests the Brazih"an 

 genus Syviphyopappus Turcz., but the distinctly sagittate 

 anthers are opposed to such reference. It seems also to re- 

 semble certain groups of Senecionid^, and this may be the 

 true reference, but the involucre is hardly consistent with it. 

 It is tentatively referred here to INULOIDE^, to whichgroup it 

 is as easily referred as Dimeresia Gray, with which genus it 

 has a number of important characters in common. 



NOCCA SUAVEOLENS Cass. (Lagascea siiaveolens HBK.). 

 Carrizal, Depart. Santa Rosa, alt. S,ooo", November 1892, 

 Heyde & Lux 4,227. A somewhat variable species, which 

 also includes L. helianthifolia HBK., L. latifolia DC, and 

 L. macrophylla Steud. Lagascea Cav. is 1,803, and Nocca 



Cav. is 1,794. . 



Desmanthodium Guatemalense Hemsley. — Volcan Ac- 

 atenango, Depart. Zacatepequez, alt. I2,000", August 1892, 

 W. C. Shannon 3,693. The only record I find of this very 

 interesting plant is the original collection by Salvin on Vol- 

 can de Fuego, at 6,000", in which material the achenes were 

 immature. The specimens before me have perfect achenes, 

 which show the oboval-oblong outline of the other species, 

 are perfectly smooth, and become black and hard, but instead 

 of being biconvex in section have a flat face and a promin- 

 ently angled face, giving a low triangular section. 



Polymnia Quichensis, n. sp. — Smooth, exceptingthe more 

 or Ies*s roughened leaves, about i" High: leaves ample, oppo- 

 site, ovate-Ianceolate, acuminate, tapering at base to a short 

 petiole, dentate or denticulate (sometimes almost entire), 

 moderately scabrous above and somewhat pubescent beneath, 

 especially upon the corispicuous reticulations (becommg 

 smoother with age), 12.5 to 25"" long, 5 to 7.5™ wide: heads 

 solitary or few in a terminal corymb whose lateral branches 

 bear at least a pair of ovate (sometimes narrower) acute 

 leaves; the disk about 15""° broad: outer involucral bracts 

 broadly ovate and acute: rays 7 to 15, yellow, linear-oblong. 



