62 NORTH AMERICAN FLORA [V01.UME 22 



Perennial, forming offsets and rosettes. 65. S. IVoodh. 



Flowers solitary, terminal. 66. 5". diversifolium . 



I^eaves obovate, toothed, opposite ; introduced species. 67. S. stolomferwm . 



2. Flowers corymbose. 



Petals purple, twice as long as the sepals. 68. 5. Faharia. 



Petals pink, 3-4 times as long as the sepals. 69. 5. telephioides . 



1. Sedum acre L. Sp. PL 432. 1753. 



Perennial, densely tufted, matted, glabrous ; sterile branches prostrate, the flowering 

 ones 2-8 cm. high. lyeaves sessile, alternate, ovate, thick, imbricated, yellowish-green, 

 entire, about 3 mm. long; cyme 2-3-forked, its branches 1-2.5 cm. long; flowers sessile, 

 about 8 mm. broad; petals yellow, linear-lanceolate, acute, 3-4 times as long as the 

 ovate sepals ; follicles spreading, 'h-A mm. long, tipped with a slender style. 



Type locality : In dry sterile fields, Burope. 



Distribution : On rocks and along roads, Nova Scotia to Ontario, New York, Pennsylvania 

 and Virginia. Naturalized from Europe. 



Illustrations: DC. PI. Grasses pi. 117 ; Kngl. Bot. pi. 839; Fl. Deutsch. ed. 5. pi. 2649; 

 Britt. & Brown, 111. Fl. /. 1813. 



2. Sedum Greggii Hemsl. Diag. PI. Nov. 1 : 12. 1878. 



Perennial, glabrous; flowering branches slender, 7-15 cm. tall. Leaves elliptic to.obo- 

 vate-oblong, imbricated, obtuse, 4-7 mm. long; sterile branches apparently prostrate or 

 ascending, shorter than the flowering ones ; flowers yellow, about 10 mm. broad, sessile or 

 very short-pedicelled, 3-5 together in a simple terminal cjmie ; calyx- segments oblong to 

 elliptic, obtuse ; petals ovate-lanceolate, keeled, acute, twice as long as the calyx ; fila- 

 ments filiform ; scales linear-oblong ; carpels 5, ovoid, tipped with long subulate styles. 



Type locality ; Real del Monte, Mexico. 

 Distribution : Hidalgo ; San Luis Potosi ; Tamaulipas. 



3. Sedum muscoideum Rose, Bull. N. Y. Bot. Gard. 3 : 39. 1903. 



Perennial, with branching creeping stems. Leaves appressed, and closely set on the 

 branches, minute, thickish, obtuse ; inflorescence much reduced, consisting of 1 or 2 ses- 

 sile flowers at the ends of branches ; calyx-lobes obtuse, ovate, 1 mm. long ; corolla yel- 

 low; petals lanceolate, 3.5 cm. long, a little longer than the stamens. 



Type locality : Arrihade Papalo, Oaxaca, Mexico. 

 Distribution : Known only from the type locality. 



4. Sedum alamosanum S. Wats. Proc, Am. Acad. 25 : 148. 1890. 



Perennial with branching rootstocks, sending up numerous erect flowering stems, 6-10 

 cm. tall. lyeaves crowded, linear-oblong, terete, 3-4 mm. long, standing at right angles to 

 the stem, minutely papillose-roughened but not ' * puberulent " as originally described; in- 

 florescence a small few-branched cjTne but sometimes (as in the type) reduced to a secund 

 raceme ; pedicels short ; sepals terete, obtuse in fresh specimens, 3 mm. long ; petals widely 

 spreading, lanceolate, acute, whitish but drying reddish, 5 mm. long; carpels erect. 



Type locality : Alamos Mountains, Sonora, Mexico. 



Distribution : Mountains of northwestern Mexico where it is known only from a few localities 

 in Sonora and Chihuahua. 



5: Sedum submontanum Rose, Bull. N. Y. Bot. Gard. 3 : 40. 1903. 



Perennial, much branched and spreading, glabrous throughout. Leaves very closely set 

 or even imbricated, small, 3-5 mm, long, short-oblong, rounded at tip, free at base, fleshy; 

 flowers few, in short-branched cymes, sessile; calyx-lobes leaf-like, short, 1-2 mm, long, 

 rounded at apex; petals narrow, white (or if pink very pale), 5-6 mm. long; scales small, 

 retuse at apex ; carpels spreading above. 



Type locality : Monte Escobado, Zacatecas, Mexico. 

 Distribution : Zacatecas ; Jalisco. 



