DEC. 1907. SPERMATOPHYTES FROM MEXICO GREENMAN.- 273 



scales, these about 1.5 mm. long and narrowed below into a 

 thickened opaque base: corolla 4 mm. long, deeply 5-toothed, 

 externally somewhat pubescent: achenes narrowly obpyramidal, 

 3 to 4 mm. long, 4-5-angled, striate, pubescent. MEXICO. 

 State of Vera Cruz: Boca del Rio, Liebmann, no. 71 (hb. Copen- 

 hagen, fragment and good drawing in hb. Gray, photograph 

 in hb. Field Mus.) ; along the shore, north of the City of Vera 

 Cruz, 24 January, 1906, /. M. Greenman, no. 114 (hb. Field 

 Mus., and hb. Gray). 



The general habit and simple leaves of this species suggest 

 a relationship with Palafoxia or Polypteris, but the technical 

 characters of the involucre, pappus, corolla and style-branches 

 place it rather with Florestina. The affinity of the plant, as 

 we'll as its specific rank, was first recognized by SchultzBipontinus, 

 and subsequently by the late Professor F. W. Klatt, but the 

 name seems not to have been hitherto published. 



T am indebted to Professor Eug. Warming for the identifica- 

 tion of my no. 114 with the Liebmann plant in the Botanical 

 Museum at Copenhagen. 



TAGETES JALISCENSIS Greenm., var minor Greenman, var. nov. 



Leaves 3 cm. or less in length, about two-thirds as broad: 

 heads 1.3 to 1.8 cm. high; involucre i to 1.4 cm. long: mature 

 achenes 7 to 7.5 mm. in length. MEXICO. State of Oaxaca: 

 Cercainas de Oaxaca, altitude 1550 m., 8 November, 1906, C. 

 Conzatti, no. 1516 (hb. Field Mus.). The chief distinguishing 

 characters separating var. minor from the species are the smaller 

 leaves, shorter involucre and flowers. 



Dysodia (Gymnol8ena) oaxacana Greenman, sp. nov. 



Shrub: stem and branches covered with a grayish bark; ulti- 

 mate branchlets terete, somewhat striate, greenish or reddish- 

 brown, minutely pubescent in decussating lines: leaves opposite, 

 sessile or essentially so, lanceolate, i to 4 cm. long, 4 to n mm. 

 broad, acute, finely serrulate, narrowed below to an entire or 

 occasional subsetiferous subpetiolate base, pellucid-punctate, 

 slightly pubescent on both surfaces under a lens especially on 

 the midrib of the upper surface, or glabrous : heads few, hetero- 

 gamous, 1.5 to 2 cm. high, terminating the stem and branches 

 on minutely bracteate 1.5-5 cm. -long glabrous peduncles: involu- 

 cre at first narrowly campanulate or subcylindric, often split on 

 one side, 12 to 14 mm. long, (7-) 8-dentate, naked or essentially 

 so at the base, glabrous, bearing several linear-elliptic glands, 

 later separating into more or less distinct lance-linear bracts; 

 teeth, or the terminal portion of the individual bracts, short, 

 triangular, acute, pubescent-tipped: ray-flowers commonly 8; 

 rays including the slender tubular portion 1.5 cm. long, 4 to 

 5 mm. broad, deep orange-red: disk-flowers about 30: pappus 

 of numerous lacerate-fimbriate scales, tawny: achenes 6 mm. 

 long, pubescent. MEXICO. State of Oaxaca: Almoloyas, 



