16 NORTH AMERICAN FLORA [VoLumE 29 
3. Monotropsis Reynoldsiae (A. Gray) A. Heller, Cat. N. Am. 
PL 5. 1898. 
Schweinitzia Reynoldsiae A. Gray, Proc. Am. Acad. 20: 301. 1885. 
Plants more slender than the two preceding species, 4-13 cm. tall, the stems often clus- 
tered, purple; leaves mostly 2-6 mm. long, the blades ovate or ovate-lanceolate, acute or 
short-acuminate; flowers more or less fragrant; sepals ovate or ovate-lanceolate or rarely 
linear, 2-4 mm. long, mostly acutish, often erose near the apex, membranous in age; corolla 
white, much longer than the calyx, the lobes ovate, much shorter than the tube. 
TYPE LocaLity: Near St. Augustine, Florida. 
Distrisution: Eastern Florida and the Indian River region. 
7. PITYOPUS Small, gen. nov. 
White or pale herbs with glabrous or nearly glabrous foliage. Stem simple, sometimes 
clustered. Leaves scale-like, approximate, or crowded on the lower part of the stem, the 
upper ones narrower than the lower. Flowers in a dense spike or spike-like erect raceme, erect 
or ascending, the bracts relatively narrow, mostly shorter than the flowers. Sepals 4 or 5, 
distinct, persistent. Petals 4 or 5, distinct, rather narrow, about as long as the sepals, pubes- 
cent within. Stamens 8 or 10, included; filaments slender, pubescent; anthers short and 
stout, usually as wide as long, much wider than the slender filament, each sac opening by a 
short slit on the side. Ovary ovoid, I-celled, 4~5-lobed, each lobe 2-ribbed; style stout, as 
long as the ovary or shorter, pubescent. Stigma depressed, somewhat annular. Capsule 
1-celled. 
Type species, Pityopus oregona Small. 
1. Pityopus oregona Small, sp. nov. 
? Monotropa californica Eastw. Bull. Torrey Club 29: 75. 1902.* 
Plant white, the stem glabrous, fully 1 dm. tall or less, stoutish; leaves 2 cm. long or less, 
the blades deltoid to triangular-lanceolate or lanceolate on the upper part of the stem, entire or 
erose; bracts shorter than the flowers, similar to the upper leaves, or the upper ones spatulate; 
sepals about 12 mm. long, in anthesis, rhombic-oblanceolate to linear; petals oblong-obovate, 
about as long as the sepals or slightly longer, pubescent within; filaments 6-7 mm. long; 
capsules not seen. 
Type collected in a dense forest north of Mount Hood, Oregon, July 3, 1891, Thomas Howell 
(herb. N. Y. Bot. Gard.). 
DistRispution: Oregon (and California?). 
8. PLEURICOSPORA A. Gray, Proc. Am. Acad. 7: 369. 1868. 
Whitish or pale-brown herbs with glabrous or nearly glabrous foliage. Stem simple. 
Leaves scale-like, scattered, the upper ones slightly narrower than the lower. Flowers in a 
dense short spike or spike-like raceme, erect or ascending, the bracts broad, sometimes exceeding 
the flowers in anthesis. Sepals 4 or 5, distinct, persistent, relatively narrow. Petals 4 or 5, 
persistent, sometimes shorter than the sepals. Stamens 8 or 10, included; filaments slender, 
glabrous; anthers narrow, erect on the apex of the slightly narrower filament, the sacs opening 
lengthwise. Ovary oval or ovoid, 1-celled, not lobed; style short and stout; stigma depressed- 
capitate. Capsule 1-celled. 
Type species, Pleuricospora fimbriolata A. Gray. 
Petals oblong, elliptic, oval, or oblong-lanceolate. = 
Perianth-parts relatively narrow; sepals ovate or oval; petals elliptic to 
oblong-lanceolate, mostly acute. 1. P. fimbriolata. 
Perianth-parts relatively broad; sepals lanceolate to linear-lanceolate; petals 
oblong or oval, mostly obtuse. 2. P. densa. 
Petals spatulate to oblong-spatulate. 3. P. longipetala. 
* The plate (Bull. Torrey Club 29: pl. 7) with the original description of Monotropa cali- 
fornica indicates that the specimens, now lost, from Marin County, California, on which 
M. californica was based, and the plants from Mount Hood, Oregon, are very closely related, 
if not identical. The only evidence lacking is the internal structure of the ovary of the 
Californian plant. 
