ROSE — MEXICAN AND CENTRAL AMERICAN PLANTS. 295 



case herbarium specimens are preserved in the National Herbarium. 

 In most cases living material can be supplied to Botanical Gardens 

 or persons who have growing collections. Two species, Sedum 

 potosinum and S.farinosum, are offered for sale by Haage & Schmidt. 

 The plates are all from photographs of living material taken in 

 Washington. 



FOUR NEW SPECIES OF ECHEVERIA AND ONE NEW NAME. 



Echeveria crenulata Rose, sp. nov. 



Caulescent, the stem in cultivated specimens short but in wild specimens much 

 elongated and enlarged; basal leaves in the wild plant broadly obovate, more than 

 30 cm. long, 15 cm. broad, rounded at apex, tapering at base into a very distinct 

 petiole; stem leaves pale green, a little glaucous, the margin wavy and purplish red; 

 leaves on flowering stems acute, ovate to spatulate, tapering into a stout, thick petiole; 

 inflorescence a short panicle, the lateral branches short, few-flowered, the bract 

 instead of subtending the branch usually carried up for some distance on the peduncle; 

 sepals widely spreading, very unequal, acute; corolla 15 mm. long, strongly angled, 

 yellowish red, its lobes acute. 



Type U. S. National Herbarium no. 454957, collected by J. N. Rose and J. II. 

 Painter near Cuernavaca, Morelos, Mexico, September, 1903 (no. 797). No. 790 of 

 Rose and Painter is the same. The species has flowered repeatedly in Washington 

 and New York. 



Echeveria gloriosa Rose, sp. nov. Plates 50, 51. 



Stems about 30 cm. tall, crowned with a compact cluster of highly colored leaves, 

 from which arise several erect or spreading flowering stems sometimes a meter long; 

 leaves 10 to 15 cm. long, 7 to 10 cm. broad, rounded at apex, deep purple, thickish; 

 flowering stem stout, glaucous; stem leaves narrow, thickish, very glaucous; inflo- 

 rescence an open panicle; lateral branches bearing numerous sessile flowers; sepals 

 ascending; corolla 12 mm. long, dark red, in bud broadly ovate, but when fully open 

 showing a wide mouth. 



Type U. S. National Herbarium no. 615398, derived from a specimen collected on 

 rocks of Cerro de Santa Lucia, Puebla, altitude 1,500 to 1,800 meters, 1907 by C. A. 

 Purpus (no. 423), which flowered in Washington in 1909 and 1910. 



Echeveria holwayi Rose, sp. nov. 



Caulescent, in cultivated specimens the stem short and stout; leaves forming a dense 

 rosette at top of stem, pale green, slightly glaucous, sometimes purplish, obovate, 

 obtuse, mucronate, narrowed at base into a stout, short petiole, the margin somewhat 

 wavy, 10 to 12 cm. long; flowering stem 90 to 120 cm. long, often deep red and glaucous, 

 its leaves scattered; inflorescence a much-branched panicle; main branches axillary, 

 5 to 15-flowered; flowers arranged in a secund raceme; pedicels short, often only 1 or 2 

 mm. long; sepals erect or ascending, linear, acute, very unequal; corolla 12 mm. 

 long, rose-colored when fully open, its lobes acute, with spreading tips. 



Type IT. S. National Herbarium no. 399680, collected by E. W. D. Holway near 

 Oaxaca, Mexico, November, 1903, and flowered in Washington, December, 1905, and 

 November, 1909 (Rose's no. 693). This species flowered in Washington at the side of 

 E. gigantea. It is of similar stature to this, but ha* much lighter and differently 

 margined leaves, redder stems, longer flowering branches, and different flowers. 



Echeveria microcalyx Britt. & Rose. 



Echeveria purpusi Britton, N. Amer. Flora 22: 26. 1905, not Schum. 1896. 



This species was again collected in 1907 and flowered in Washington in 1909 and 

 1910. 



