(3) 
CLEMENTSIA Rose, gen. nov. 
Perennial herb with a thick elongated root, and usually with 
several stems from the base. Stem-leaves numerous. Flowers in 
a more or less elongated dense spike or raceme. Calyx-segments 
linear to linear-lanceolate. Petals distinct, rose-colored. Stamens 
10, 5 alternating with the petals and distinct, 5 opposite the petals 
and each adnate to its corresponding petal near the middle. 
Scales 5, prominent, flat, obtuse. Carpels 5, erect. 
Named in honor of Professor Frederic E. Clements of the 
University of Nebraska, who has prosecuted extensive investiga- 
tions on the plants of Colors 
Type species, Sedum lean A. Gray. 
CLEMENTSIA RHODANTHA (A. Gray) Rose. 
Sedum rhodanthum A. Gray, Am. Jour. Sci. II. 33: 405. 
1862. 
In meadows and along streams in the Rocky Mountains, Arizona 
and Utah to Montana. 
VILLADIA Rose, gen. nov. 
Perennial by fleshy or somewhat tuberous roots; caulescent. 
Leaves terete and farsa. Inflorescence an equilateral raceme or 
spike or a very compact panicle. Flowers small. Calyx-lobes 5, 
nearly equal. Corolla not 5-angled. Petals thin, either distinct or 
slightly united. Stamens ro; anthers broad and short. Scales 
conspicuous, thin. Carpels erect 
Named for Dr. Manuel M. Villada, one of the prominent scien- 
tific men of Mexico, who has for many years been editor of La 
Naturaleza. 
Type species, Cotyledon parviflora Hemsl. 
1. Vittapia TExana (J. G. Smith) Rose. 
Sedum Texanum J.G. Smith, Rep. Missouri Bot. Gard. 6: 114. 
pl. 50. 1895. 
Eastern Texas. 
2. Villadia imbricata Rose, sp. nov. 
Caespitose; sterile branches thickly . with small ovate imbri- 
cated leaves; flowering branches 2-6 cm. long, thickly set with 
i r 
nute tubercles; inflorescence a very short compact leafy spike; 
sepals distinct, leaf-like, shorter than the corolla; corolla ‘* white,” 
