322 ORCHIDACEAE 
Flowers in a terminal spike or raceme. Perianth showy. Sepals and lateral petals similar 
or the latter narrower or broader, distinct, spreading. Lip spreading, dilated, stalked, 
bearded on the upper surface, with club-shaped hairs. Column elongated, incurved, 2- 
winged above. Anther terminal, sessile, lid-like. Pollen-masses 2, one in each sac, 
loosely granular. Capsules erect. [Calopogon R. Br.] GRASS-PINK. 
Bracts as long as the ovaries or only slightly shorter. 
Middle sepal and petals less than 1.5 em. long: petals acute. 
Petals ovate : lip conspicuously mucronate. 1. L. multiflorum. 
Petals linear-lanceolate: lip barely mucronate. 2. L. pallidum. 
Middle sepal and petals over 2 cm. long: petals obtuse. 3. L. Simpsonii. 
Bracts much shorter than the ovaries. 
4 
Blade of lip much broader than long : hairs of the erest decurrent on the claw. . L. tuberosum. 
Blade of lip barely broader than long: hairs of the crest not decurrent. 5. L. graminifolium. 
1. Limodorum multiflórum (Lindl.) Mohr. Leaves usually 2, basal, 8-15 cm. long, 
sheathing at the base; blades linear, acuminate : scapes 2-4 dm. tall, slender, sometimes 
zigzag: spike continuous, 7-14-flowered: bracts about as long as the ovaries: perianth 
deep purple: lateral sepals obliquely ovate, 10-12 mm. long: lateral petals ovate, acute: 
lip with a broadly cuneate blade, about 1 cm. long, notched and mucronate at the apex, 
crested in the middle with a beard of slender hairs. : 
In low pine lands, peninsular Florida. 
2. Limodorum pallidum (Chapm.) Mohr. Leaves solitary, basal, 1-3 dm. long; 
blades narrowly linear, attenuate, acute, accompanied by 1 or 2 sheathing scales at the 
base : scapes 2-5 dm. tall, slender : spike interrupted, 8-20-flowered : perianth white tinged 
with purple: lateral sepals oblong or obovate, 11-13 mm. long, acuminate : lateral petals 
linear or linear-lanceolate, longer than the sepals, acute: lip with a cuneate-flabellate blade, 
6-8 mm. long, barely mucronate, crested with purplish hairs: capsules oblong or oblong- 
clavate, 1.5 cm. long. 
In low pine lands, North Carolina to Florida and Alabama. Spring. 
3. Limodorum Simpsónii (Chapm.) Small. Leaves basal, usually solitary ; blades 
narrow, linear, 3-4 dm. long, erect, finely ribbed: scapes 5-7 dm. tall, slender, wand- 
like : spike few-flowered, soon interrupted : bracts about as long as the ovaries: perianth 
purple : lateral sepals obliquely oblong-ovate, fully 1.5 em. long, acuminate ; middle sepal 
oblong, about 2 em. long, acuminate : lateral petals oblong-ovate, 2.3-2.5 cm. long, ob- 
tuse: lip about 1 cm. long, densely bearded near the apex, the hairs club-shaped : column 
1.2 em. long, curved. 
In low pine lands, peninsular Florida. Spring and summer. 
4. Limodorum tuberósum L. Leaf usually solitary, basal; blades linear to 
narrowly oblong, 1-4 cm. long, acute: scape solitary, 2-9 dm. tall, straight or curved: 
spike 10-40 cm. long, 3-22-flowered, not dense : perianth pink-purple : bracts much shorter 
than the ovaries, acute: lateral sepals ovate-oblong, fully 1.5 em. long, oblique, acute: 
lateral petals lanceolate or oblong, surpassing the lateral sepals: lip fully 1.5 cm. long, 
with a fan-shaped blade, erose or crenulate at the apex, crested with pink, yellow or 
orange hairs, these decurrent on the claw: capsule oblong, 2-2.5 em. long. [Calopogon 
pulchellus R. Br. ] 
In swamps and meadows, Newfoundland to Minnesota, Florida and Missouri. Spring and sum- 
mer. 
5. Limodorum graminifélium (Ell.) Small. Leaf solitary, basal, but accom- 
panied by 1 or 2 sheathing scales, 1-2 dm. long; blades narrowly linear, acute, often 
little broader than thick: scapes wire-like, 1.5-4 dm. tall: spike barely interrupted, 3-7- 
flowered : bracts much shorter than the ovaries: perianth bright purple: lateral sepals 
elliptic-oblong, about 1 cm. long, acuminate: lateral petals oblong, ui waste the lateral 
sepals, rather obtuse : lip with a broadly cuneate-obovate blade, barely broader than long, 
crested with yellow hairs ; the claw glabrous. [ Calopogon parviflorus Lindl. ] 
In low pine lands, North Carolina to Florida. Spring. 
19. ISÓTRIA Raf. 
Scapose herbs, with elongated fleshy-fibrous roots. Leaves reduced to several scales at 
the base of the scape. Scape solitary, topped by a whorl of several spreading leaf-like 
bracts. Flowers solitary or 2 together at the top of the scape, pedicelled. Perianth dusky 
purple or greenish, erect or ascending. Sepals narrow, nearly equal, sometimes much 
elongated. Lateral petals narrow, shorter than the sepals. Lip slightly 3-lobed, spurless, 
