470 
ORCHIDACEiE. (ORCHIS FAMILY.) 
1. P. obtUSata, Lindl. (Dwarf Orchis.) Leaf obovate, ob¬ 
tuse ; spike rather loosely 5 - 10-flowered; upper sepal broad and 
rounded ; petals bluntly triangular; lip linear , entire , bearing 2 small 
tubercles at the base, about the length of the curving spur. — Cold 
peat-bogs and high mountains of New Hampshire, Vermont, and N. 
New York. June. — Root a cluster of thick fibres. Scape 5'-8' 
high. Flowers £' Jong. 
2. P. rotundifolia, Lindl. (Small Round-leaved Or¬ 
chis.) Leaf round-ovate or orbicular (2'-3' wide); spike several- 
flowered; lip 3-lobed, larger than the ovate petals and sepals, the lat¬ 
eral lobes entire, the middle one larger and inversely heart-shaped.— 
Along the boundary between Maine and New Brunswick, Mr. Good¬ 
rich. — Scape 8' high. Leaf, and sometimes the white flowers, spot¬ 
ted with purple : lip J* long. 
§ 2. Scape 2-leaved at the base : spur very long: lip entire. 
3. P. orbiculata, Lindl. (Large Round-leaved Orchis.) 
Leaves very large, orbicular, spreading flat on the ground; scape 
bracted, bearing many flowers in a loose raceme ; upper sepal orbicu¬ 
lar, the lateral ovate ; lip narrowly linear-spatulate 1 drooping, nearly 
thrice the length of the ovate reflexed petals; spur curved , slender, 
gradually thickened towards the apex , blunt , twice the length of the ova¬ 
ry .— Rich woods, under Hemlocks, &c., rather rare, chiefly north¬ 
ward and along the Alleghanies. July. — Root a few thickened 
branches. Leaves very smooth, shining above, silvery underneath, 
4 / — 8 f wide. Scape 1° —2° high. Flowers pedicelied, spreading* 
greenish-white : spur l&'-2' long. 
4. P. Hookeii, Lindl. (Smaller 2-leaved Orchis.) Leaves 
orbicular, spreading (3' - 4 1 broad); scape mostly naked, bearing nu¬ 
merous upright sessile flowers in a strict spike ; sepals ovate-lanceo¬ 
late ; lip lanceolate, pointed, a little incurved, longer than the linear- 
lanceolate petals ; spur slender , acute , about the length of the ovary. 
Woods, Rhode Island to Wisconsin. June. — Scape barely 1° high. 
! lowers 10 to 20, yellowish-green : spur f * long. 
§ 3. Stem leafy : lip entire (or nearly so), nearly equalling or exceeding 
the spur : root of fleshy branches or fibres. 
5. P. bracteata, Torr. (Large-bracted Green Orchis) 
Lower leaves obovate , the upper oblong and gradually reduced to lan¬ 
ceolate acute bracts which are 2-3 times the length of the flowers, 
spike loose ; petals linear-lanceolate, erect; lip oblong-linear or slight - 
ly spatulate , truncate and minutely 2 - 3- toothed at the tip , more than 
twice the length of the sac-like somewhat 2-lobed spur. — Damp woods, 
common northward. June. — Stem # -12* high, 6 - 12 -flowered. 
Flowers small, green. 
6. p. hyperbbrea, Lindl. (Northern Green Orchis.) 
