Habenaria orbiculata (Pursh) Hook.

• Authority

  Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

• Family

  Orchidaceae

• Scientific Name

  Habenaria orbiculata (Pursh) Hook.

• Description

  Species Description - Scape arising from fleshy roots, 3–6 dm, with a few narrow bracts; lvs 2, basal, prostrate, 10–15(–25) cm, broadly elliptic to rotund, seldom narrower; infl loose, 5–20 × 4–5 cm; fls white or greenish-white, on pedicels 5–10 mm; lip oblong-linear, directed downward, 10–20(–25) mm; sep and lateral pet widely spreading, the pet directed obliquely upward; spur 15–25(–45) mm, usually directed transversely and somewhat dilated distally; tips of the pollen-sacs projecting in front of the nectary and widely spreading; 2n=42. Moist woods; Lab. to Alas., s. to Pa., Ind., Minn., and Oreg., and in the mts. to N.C. and Tenn. July, Aug. (Lysias o.; Platanthera o.) Robust plants with large lvs and large fls with a notably long spur have been distinguished as var. macrophylla (Goldie) B. Boivin. (H. macrophylla)

• Common Names

  round-leaved orchid