548 
75. 
78. 
78. 
NORTH AMERICAN FLORA . [VoLUME 22 
inflorescence cymose, few-flowered or sometimes reduced to one flower; pedicels 2-10 mm. 
long, often bearing a single bract near the middle; calyx green, deeply 5-parted; lobes often 
a little longer than the petals, obtuse, spreading, fleshy, 6-7 mm. long; petals distinct, 
broadly ovate, acute, reddish, in anthesis reflexed; stamens red, 10, the five alternating 
with the petals distinct, the other five borne on the base of the petals; carpels red, at first 
erect but in age widely spreading. 
TYPE LOCALITY: In the Sierra Madre, near Monterey, Nuevo Leon. 
DISTRIBUTION: Known only from the type locality. 
ILLUSTRATION: Contr. U. S. Nat. Herb. 13: pl. 59. 
81. Sedum Topsenti Hamet, Bot. Jahrb. 50: Beibl. 114: 26. 1914. 
Probably perennial, glabrous, slender. Leaves alternate, sessile, 5-8 mm. long; in- 
florescence corymbose; flowers sessile or nearly so; sepals linear obtuse; corolla longer than 
the calyx; stamens 10; carpels 5, terminated by short attenuate styles. 
TYPE LOCALITY: Chiricahua Mountains, Arizona. 
DISTRIBUTION: Known only from the type locality 
82. Sedum Treleasei Rose, Contr. U. S. Nat. Herb. 13: 300. 1911. 
Perennial, the stems woody at base, numerous, at first erect but finally procumbent and 
even pendulous in its native haunts, glaucous. Leaves closely set, especially toward the 
ends of the branches, standing nearly at right angles to the stems, very glaucous, thick 
but decidedly flattened, 2.5-3.5 cm. long, obtuse, rounded below with the tip slightly 
turned up, the upper face slightly concave; flowering branches weak, slender, ascending 
or drooping, arising from the axils of upper stem-leaves, pinkish, the leaves narrow, ob- 
tuse; cymes sessile, small, about 3 cm. broad, compact; pedicels very short; sepals 5, 
linear, acute, terete, 3 mm. long; petals yellow, 6 mm. long, lanceolate, acute, widely 
spreading or sometimes turned backward; stamens 10, erect, yellow; carpels 5, long-attenu- 
ate, yellow, at first erect; scales yellow, broad. 
TYPE LOCALITY: Near Tehuacan, Mexico. 
DISTRIBUTION: South Mexico. 
ILLUSTRATION: Contr. U.S. Nat. Herb. 13: pl. 60. 
83. Sedum Triteli Hamet, Field Mus. Publ. Bot. 2: 379. 1913. 
Perennial, 3-5 cm. long, from fibrous roots. Leaves alternate, sessile, obovate to linear, 
4.5-7 mm. long; inflorescence 2-flowered; pedicels 6 mm. long; calyx glabrous; sepals 
longer than the tube, linear to deltoid, 4.5-5.5 mm. long; corolla yellow, longer than the 
calyx; petals 5.5-6 mm. long, obtuse; carpels few-seeded; scales 5, nearly linear. 
TYPE LOCALITY: In the Sierra Madre, Guatemala. 
DISTRIBUTION: Known only from the type locality. 
PENTHORACEAE 
By PER AXEL RYDBERG 
Penthorum sedoides. 
Add to the illustrations: Britt. & Brown, Ill. Fl. ed. 2. f. 2144; G. T. Stevens, Ill. Guide 
pl. 58, f. 9. 
PAR NASSIACEAE 
By PER AXEL RYDBERG 
Parnassia fimbriata. 
Add to the illustrations: Armstrong, Field Book W. Wild FI. 197, f. 
Insert: 
4a. Parnassia Townsendii B. L. Robinson, Proc. Bost. Soc. Nat. Hist. 31: 
266. 1904. 
Parnassia mexicana Rose, Proc. U. S. Nat. Mus. 29: 438. 1905. 
Rootstock short, with many fibrous roots; petioles 4-6 cm. long, dilated; blades 
oblong-oblanceolate, 4-6 cm. long, 14-16 mm. wide, 5—7-ribbed, minutely fulvous- 
