298 



FLORA. 



shorter than the ovary and capsule; sepals equalling the petals, or but little longer, 

 somewhat narrowed at the base; lip crested over nearly the whole face and lobes; 

 capsule erect, about 2 cm. long. In moist woods, Conn, to S. N. Y., Penn., and N. J. 

 Rare and local. June. [Pogonia affinis Austin.] 



13. TRIPHORA Nutt. 



Low herbs with fleshy tubers and axillary flowers. Sepals and petals separate, 

 ascending, subequal. Lip erect, slightly clawed, and more or less 3-lobed, not 

 crested, spurless. Column elongated, club-shaped at the summit. Anther terminal, 

 stalked, attached to the back of the column, its sacs parallel; pollinia 2, 1 in each 

 sac, powdery-granular, without caudicles. Stigma a flattened disk below the anther. 

 Capsule oval, drooping. [Greek, bearing three, in allusion to the usual 3 flowers.] 

 A genus of 8 species of North and tropical America, only the following found in 

 the United States. 



1. Triphora trianthophora (Sw.) Rydb. Nodding Pogonia. (I. F. f. 1115.) 

 Stems glabrous, 7-20 cm. high, from a tuberous root, often clustered. Leaves 2-8, 

 alternate, ovate, 6-18 mm. long, clasping; flowers 1-7, axillary, peduncled, pale 

 purple, at first nearly erect, soon drooping; perianth 12-16 mm. long; sepals and 

 petals about equal, connivent, elliptic, obtuse; lip clawed, somewhat 3-lobed, 

 roughish or crisped above, about as long as the petals; capsule oval, drooping, 

 about 12 mm. long. In rich woods, Can. ( ? ), Vt. to Fla., Wis. and Kans. Aug.- 

 Sept. [Pogonia trianthophora (Sw.) B. S. P.] 



14. ARETHUSA L. 



Low herbs, with small bulbs and mostly solitary flowers on slender scapes, the 

 solitary leaf linear, hidden at first in the upper scale, protruding after flowering. 

 Sepals and petals about equal, connivent and hooded above, coherent below. Lip 

 dilated and recurved-spreading at the apex, crested on the face with straight some- 

 what fleshy hairs, slightly gibbous at the base. Column adherent to the lip below, 

 linear, narrowly winged and dilated at the summit. Anther operculate, of 2 ap- 

 proximate sacs incumbent upon the column; pollinia 4, 2 in each sac, powdery- 

 granular. Capsule erect, ellipsoid, strongly angled. [Dedicated to the nymph 

 Arethusa.] Two known species, the following occurring in North America, the 

 other in Japan. 



1. Arethusa bulbdsa L. Arethusa. (I. F. f. 1119.) Scape glabrous, 12- 

 25 cm. high, bearing 1-3 loose sheathing bracts. Leaf linear, many-nerved, becom- 

 ing 10-15 cm * l° n g» flower solitary (rarely 2), arising from between a pair of small 

 unequal scales, rose-purple, 2-5 cm. high; sepals and petals linear to elliptic, 

 obtuse, arched over the column; lip usually drooping beneath the sepals and petals. 

 the apex broad, rounded, variegated with purplish blotches; capsule ellipsoid, 

 strongly 6-ribbed, rarely maturing. In bogs, Newf. to Ont and Minn., south to 

 N. Car. and Ind. May-June. 



15. LIMODORUM L. [CALOPOGON R. Br.] 



Scapose herbs, with round solid bulbs which arise from the bulb of the previous 

 year, a leaf appearing the first season, succeeded in the following year by the scape. 

 Mowers several in a loose terminal spike or raceme. Sepals and petals nearly 

 alike, separate, spreading. Column elongated, 2-winged above. Anther terminal. 

 operculate, sessile; pollinia solitary, 1 in each sac, loosely granular. Lip spread- 

 ing, raised on a narrow stalk, dilated at the apex, bearded on the upper side with 

 long club-shaped hairs. [Greek, a meadow-gift.] 



1. Limodorum tuberosum L. Grass-pink. Calopogon. (I. F. f. 1145.) 

 Scape slender, naked, 3-5 dm. high. Leaf linear-lanceolate, 2-3 dm. long. 6-20 

 mm. wide, sheathing, with several scales below it; spike 1-4 dm. long, 3-15-fiov.-- 

 ered; flowers about 2 cm. long, purplish pink, subtended by small acute bracts; 

 -■pals obliquely ovate-lanceolate, acute, about 2 cm. long; petals similar; column 

 incurved; lip as long a-- the column, broadly triangular at the apex, crested along 

 the face with yellow, orange and rose-colored hairs; capsule oblong, nearly erect. 

 In bogs and meadows. .V-wl". to Out. and Minn., south to Fla. and Mo. June-July. 



