Corybas aconitiflorus Salisb.

Plant: Small, 1 - 5 cm high, terrestrial. 

Tuber: ellipsoid or subglobose, 3 - 7 by 2 - 5 mm.  

Stem: 3 - 34 mm long, 3-winged. 

Cataphyll: funnelshaped, 4 - 5 mm long, subcaudate, glabrous. 

Leaves: green above, reddish or silvery below; orbicular-cordate or ovate-cordate, 8 - 24 by 5 - 18 mm, acuminate, base cordate, sometimes developed into an up to 7 mm long petiole-like part, margin crinkled-wavy, midrib slightly impressed above, crested below mainly in basal part, lateral nerves 1, rarely 2 or 3 basal, and 2 or 3, rarely 5, suprabasal on either side of midrib, lowest basal nerve, if present, very short, inner reaching apical part of limb; pellucid lenticels none. 

Pedicel: 1 - 2.5 mm, rarely up 6 mm long, glabrous. 

Bract: linear, boatshaped, 5.5- 7 by 1.5 - 2.5 mm, acute, tip often curved outward, glabrous; Bracteole, if present, subulate, 1.5 - 2 mm long. 

Ovary: erect, narrowly ellipsoid, 6 - 8.5 mm long, glabrous. 

Flower: variable in colour and size, dull metallic reddish purple or rarely wholly white and these plants usually larger. 

Median sepal: strongly cucullate, curving over and entirely covering lip, spathulate, 10 - 12 by 5 - 6 mm, but up to 18 mm long when flattened, recurved and apiculate at tip, 7-nerved at base, 15-nerved on the hood, glabrous. 

Lateral sepals: subulate, 1 - 1.5 mm long, acute, glabrous. 

Lateral petals: subulate, 0.3 - 0.5 mm long, acute, glabrous, sometimes absent. 

Labellum: from a curved, 4-6 mm long tubular basal part abruptly curved downward and spreading into a cordate-orbicular limb, in throat with a shallow pouch, limb apiculate, 17-nerved, papillate on inside along margin, the latter entire;  

Spurs: narrowly conoid, 2-3 mm long.   

Capsule: ellipsoid, trigonous, 10 - 12 by 4 -5 mm, either peduncle or stem elongating up to 21 cm, but bract remaining at base of capsule.