ORCHIDACEAE 327 



Sepals and lateral petals nearly similar, spreading. Lip 2-lobed, produced backward into 

 a long slender spur. Column erect, very slightly winged, or wingless. Anther 2-celled, 

 terminal, lid-like. Pollen-masses 4, waxy, 2 in each sac, each attached to a small trans- 

 verse gland. Capsules drooping. CRANE-FLY ORCHIS. 



1. Tipularia unifolia (Muhl. ) B.S.P. Foliage glabrous. Leaf solitary, devel- 

 oping in the fall and lasting till spring ; blade ovate or ovate-lanceolate, 4-9 cm. long, 

 acute or acuminate, truncate or subcordate at the base, plaited, brown-spotted : scape erect, 

 3-6 dm. tall, simple : raceme as long as the rest of the scape or shorter : bracts none : 

 pedicels spreading : sepals linear or oblong-linear, 6-8 mm. long, rather obtuse : lip as 

 long as the petals or shorter, 3-lobed, the middle lobe narrow : spur slender, thrice or 

 four times as long as the petals : column shorter than the petals, often minutely pubescent 

 at the top : capsules oblong, 10-12 mm. long. [ T. discolor Nutt.] 



In woods or on banks, Vermont to Michigan, Florida and Louisiana. Summer. 



30. DENDROPHYLAX Keichenb. f. 



Epiphytic herbs, with dense clusters of roots. Leaves wanting or obsolete. Scape 

 simple, slender. Flowers solitary at the top of the scape or few in a terminal raceme. 

 Perianth often white. Sepals 3, nearly equal, spreading. Lateral petals nearly like the 

 sepals. Lip erect, sessile, 3-lobed, the middle lobe 3-lobed, the lateral lobes angular, each 

 prolonged at the base into a filiform spur. Column very short. Anthers 2-celled, ter- 

 minal, lid-like, incumbent. Pollen-masses 2, waxy, unappendaged. Capsule beakless. 



1. Dendrophylax Lindeuii Benth. Epiphytic, with fleshy, cord-like roots 1-4 dm. 

 long. Stem scape-like, 6-12 cm. long, slender, with several clasping scales : perianth showy : 

 sepals linear or linear-lanceolate, 2.5-5 cm. long : lateral petals similar to the sepals : lip 

 ample, 3-5 cm. long, the middle lobe with 2 linear-lanceolate attenuate spreading segments 

 5-10 cm. long : spur filiform, 10-15 cm. long : capsule oval or oblong-oval, stalked. 



On palms, southern peninsular Florida. Also in Cuba. 



31. EFIDENDRUM L. 



Epiphytic herbs, clinging to the bark of trees. Leaves persistent. Flowering stems 

 simple or branched, each terminated by a raceme or panicle. Sepals and lateral petals 

 quite similar, and equal, mostly spreading. Lip dilated above : claw wholly or partially 

 adnate to the column : blade entire or parted : spur none, or adnate to the ovary. Anther 

 lid-like. Pollen-masses 4, stalked. Capsule somewhat elongated, ribbed. TREE ORCHIS. 



Flowering stems with one or several remote scales above the leaves. 

 Lip 3-lobed : sepals and lateral petals obtuse or abruptly pointed. 



Column slightly margined : lip 3-lobed, the middle lobe not dilated. 1. E. conopseum. 



Column 2-winged : lip 3-parted, the middle lobe dilated. 2. E Tampense. 



Lip entire : sepals and lateral petals attenuate or acuminate. 



Lip orbicular-reniform : sepals 2-5 cm. long : leaf-blades broadly linear. 3. E. cochleatum. 



Lip rhombic-obovate : sepals 10-11 mm. long : leaf-blades narrowly spatulate. 4. E. erythronioides. 

 Flowering stems completely sheathed by the leaf-bases. 

 Inflorescence spicate or racemose. 



Sepals and lateral petals 5-7 mm. long : capsules 15-18 mm. long. 5. E. rigidum. 



Sepals and lateral petals 4-6 cm. long : capsules 3-4 cm. long. 6. E. nocturnum. 



Inflorescence umbel-like. 7. E. umbellatum. 



1. Epidendrum coiidpsenm Ait. Plants tufted, 5-20 cm. tall. Roots matted : 

 leaves 1-3 ; blades leathery, oblong to oblong-lanceolate, 3-8 cm. long, sheathing at the 

 base : flowering stems slender, 5-20 cm. long, with a few remote scales : pedicels spread- 

 ing, 5-10 mm. long : perianth green, often tinged with purple : sepals spatulate or linear- 

 spatulate, 7-10 mm. long : lateral petals similar but usually narrower : lip with 2 callos- 

 ities at the base of the blade, this 3-lobed, the lateral lobes crenulate, the terminal one 

 notched at the apex : capsules oblong, 1.5-2 cm. long. 



On trees in river swamps and low grounds, South Carolina to Florida and Alabama. Summer. 



2. Epidendrum Tampense Lindl. Plants tufted, 1.5-6 dm. tall. Leaf-blades linear 

 or linear-lanceolate, 8-20 cm. long, leathery, typically 2 together : flowering stems 

 slender, with several remote scales : sepals nearly 2 cm. long, slightly broadened upward, 

 lightly shaded with brown : lateral petals slightly shorter than the sepals, rather spatulate, 

 of a deeper brown than the sepals : lip 1-1.5 cm. long, the middle lobe orbicular or reniform- 

 orbicular, 7.5-8.5 mm. wide, crisped, with white edges and a rose-purple center, the lateral 

 lobes erect, oblong-lanceolate, about 1 cm. long, white streaked at the base with rose- 

 purple : column 2-winged : capsules oblong, 2.5-3 cm. long. 



On trees, peninsular Florida and the Keys. 



3. Epidendrum cochleatum L. Plants 2-4 dm. tall. Leaves usually 2 ; blades 

 leathery, broadly linear, 1.5-4 dm. long, acute : flowering stems stout, with 1 or several 



