Flora of New Zealand Series

Cyrtostylis reniformis R. Br. Prodr. 1810, 322.

C. oblonga Hook. f. Fl. N.Z. 1, 1853, 246.

C. rotundifolia Hook. f. Fl. N.Z. 1, 1853, 246.

C. macrophylla Hook. f. Fl. N.Z. 1, 1853, 246.

C. oblonga Hook. f. var. rotundifolia (Hook. f.) Cheesem. Man. N.Z. Fl. 1906, 685.

Acianthus reniformis var. oblongus (Hook. f.) Rupp et Hatch in Proc. Linn. Soc. N.S.W. 70, 1946, 59.

Type locality: Vicinity of Port Jackson, N.S.W.

Plant at fl. c. 3–10 cm. tall, elongating later. Stem erect, slender. Green lf sessile, almost basal, c. 1–3–(4) × 0.8–1.7 cm., oblong-ovate, obtuse to subacute, cordate to rounded at base. Raceme to c. 3 cm. long; floral bracts us. membr. and small. Fls 1–4; per. 8–10 mm. long, widespreading, pink to greenish. Sepals subequal; dorsal narrow linear-lanceolate, obtuse, erect, concave; lateral narrow-linear, acute. Petals similar to lateral sepals. Labellum about as long as sepals, oblong; tip obtuse, not recurved; surface almost plane except for a shallow longitudinal groove leading down to each of the 2 basal calli. Column shorter than labellum, clearly displayed; wings narrow below, widening above so that stigma is flanked by 2 lobes. Pollinia tabular, ± crescentic, 2 in each anther cell, breaking easily into single grains.

DIST.: N., S. South Id records confined to the NW except for a few early records from Canterbury.

Under light shade.

FL. 7–10.

Cyrtostylis oblonga. Original localities: "Northern Island. Frequent in moist woods and on shady banks. Sinclair, Colenso, etc." Type: K(?). There is considerable range in shape and size of lvs in N.Z. and the differences from Australian plants seem rather slight.

C. rotundifolia from "Northern Island, Raukawa Ridge, Hawke's Bay, and Cape Kidnappers, Colenso" and C. macrophylla from "Northern Island, East Coast, Colenso" were accepted with some doubt by Hooker himself.