209 
25-30 X 15-20 », punctate-scabrous; aecidiospores subglobose or 
obovate, often subangular, smooth, 20-23 X 15-20 y Mostly uni- 
septate. 
UREDO COMMELINACEA Ell. & Kelsey. 
On leaves of Commelina elegans. 
Sori amphigenous, scattered, or seated on suborbicular in- 
definite dead brownish spots, 3-5 mm. diam., covered by the 
epidermis which is raised into hemispherical ferruginous pustules 
%-I mm. diam., finally ruptured in the center and often umbili- 
Cate ; spores echinulate, globose, 19~21 y, or elliptical, 22-27 X 20- 
22», ferruginous; the spots are subbullate. 
U. Spegazzinu De Toni has larger smooth spores and U. Com- 
melinae Kalch. smaller glabrous spores. Possibly this may 
belong to Uromyces Commelinae Cke. 
Urepo GouanisE EIl. & Kelsey. 
On leaves of Gouania Domingensis. + 
Sori hypophyllous, scattered, minute, hardly %4 mm. diam., 
Trust-color, not on any definite spots, but the leaf, especially above, 
1S mottled with light yellow indefinite spots; spores obovate- 
echinulate, pale brown, 22-27 X 18-20 p. 
A new Species of Clematis from Tennessee. 
CLEMATIS GATTINGERI N. sp. 
_ A perennial bright green vine. Stems. angled, climbing over 
bushes and rocks, 1-3 meters long, densely glandular, considerably 
branched; leaves 1~1.5 dm. long, pinnate; petioles 2-4 cm. long, 
less densely glandular than the stem; leaflets membranuus, lanceo- 
late, or broadly lanceolate, 1.5—5 cm. long ; more or less pilose and 
glandular on both sides, acute or somewhat acuminate, glandular- 
Ciliate, subsessile, or short-petioluled, paler beneath than above; | 
peduncles stoutish, 3-5 cm. long, glandular like the stem; bracts 
vate, 5-10 mm. long; flowers purple, 10-13 mm. long; sepals 
elliptic or elliptic-lanceolate, felt-like, often recurved from the 
middle, crested near the sides below the apex, minutely pilose, 
ribbed, narrowed into caudate tips which are curled back ; stamens 
pubescent; filaments longer than the anthers which are clothed _ 
with ascending hairs especially at the tips, achenes ovate-oval . 
elliptic, with an ovate or elliptic impression, 6-7 mm. long, minute- — 
ly pubescent, the styles erect or nearly so, recurved from below 
the middle, 2—2.5 cm. long, plumose, tawny-green. — ee Kee 
