Corybas rotundifolius (Hook. f.) Rchb. f.

Plant: Small, delicate, 2-4 cm high.   

Stem: slender, 2.5-5 cm long.  

Leaf: sessile, orbicular, cordate, acuminate or apiculate, 1.2 cm broad, 1.2-2.5 cm. long, membranous when dry, showing 1 or 2 circular veins on each side of the midrib connected by transverse veinlets. Leaves 2 in the juvenile. 

Peduncle: short 

Bracts: 2, small, erect, acute  

Flower: about 0.8 cm long, horizontal or deflexed, purplish-green 

Dorsal sepal: very narrow at the base, broadened above and hood-shaped, arched over the lip. 

Lateral sepals: small, linear-subulate, seldom more than ½ as long as the lip. 

Lateral petals: small, linear-subulate, seldom more than ½ as long as the lip 

Lip: large, tubular, the margins meeting behind the column and enclosing it, orbicular-cordate when spread out, apex truncate, entire or very slightly denticulate, inward-facing labellar calli confined to the median line and ex­tending back into the throat, short near the apex but much longer towards the column, and ceasing abruptly 3 mm from it.  

Auricles: rounded  

Column: stout, erect or curved?, basal callus prominent, another recurved at the tip. 

Capsule: on peduncle elongating up to 10 cm 

Type: New Zealand, upper Manawatu River, near village of Puehutai, Colenso, 2 April 1846 

Distribution: North Island: Auckland — Kaitaia (Mongonui County); upper Manawatu River, near village of Puehutai. Specimens in herbaria suggest that it once extended much further south 

Ecology: Small groups on clay banks, scrub and light forest between Warkworth and North Cape 

Elevation: Sea level