Flora of New Zealand Series

C. hirsuta var. uniflora Hook. f. Handbk N.Z. Fl. 1864, 12.

C. heterophylla var. uniflora (Hook. f.) Ckn. Rep. Bot. Surv. St. Id. 1909, 54.

Type locality: uncertain. Type: K, No. 1813, New Zealand, Colenso.

Herb up to c. 5 cm. tall; stock slender; lvs several to many, radical; lamina c. 3 mm.-1 cm. long, ovate to suborbicular, veins not mucronate-tipped; petioles slender, ± flattened, up to 4 cm. long. Fls solitary on slender peduncles c. 4 cm. long, occ. in 2- to 4-fld racemes. Sepals c. 2 mm. long, ovate-oblong, margins hyaline; petals white, ovate-oblong, up to 7 mm. long, including claw c. 2 mm. long. Siliques linear, up to 2 cm. long; seeds < 1 mm. long.

DIST.: N., S., St. Coastal, lowland and montane boggy ground.

The specimens chosen as the type are ± 3 cm. tall; lvs reduced to simple lflt, lamina ± 5 × 4 mm.; fls solitary, ± 2 mm. diam. on scapes ± 1·25 cm. long. Hooker, loc. cit., considered this "rather a reduced state than a distinct race"; Schulz, loc. cit., classed it as a forma abortiva of C. debilis. It comes true from seed and may hybridize with debilis.