Acaulous or shortly stemmed perennials, usually forming compact flat rosettes closely adpressed to the soil surface; vertical tap-root long and stout, crowns surrounded by fibrous leaf remains; leaf rachis and main veins, petioles and inflorescence branches stout, densely puberulent to almost glabrous. Leaves ovate-oblong in outline, pinnate; pinnae usually not disjunct on the rachis, 2 x pinnatifid, ultimate segments linear-lanceolate. Umbels compound, main inflorescence usually sessile, laterals often stalked; bracts leaf-like; bracteoles linear-lanceolate or pinnatifid with linear segments. Calyx teeth linear-lanceolate, unequal. Petals narrowly obovate, acuminate at the base, acute apex inflexed. Stylopodium domed, styles long, spreading in fruit. Fruit rectangular-ellipsoid to suborbicular in outline, truncate or more usually cordate at ends, mericarps dorsally compressed, white with 4 dark brown lines of vittae alternating with the 3 dorsal ribs; lateral ribs broadly winged, some of the dorsal ribs equally broadly winged or wings reduced to abortive structures at the base of the fruit; whole fruit characteristically asymmetric with one mericarp having the 2 outer dorsal ribs ornamented and the other only the centre rib, vittae apparent as brown lines.
Key to species
Cortiella hookeri (C.B.Clarke) C.Norman
Cortia cauwetmarciana M.A.Farille & S.B.Malla
Cortia glacialis Bonner
Bhutan: C—Tongsa district
(Rinchen Chu, Takse La); N—Upper Mo Chu district (Laya, Yale La),
Upper Pho Chu district (Kesha La), Upper Bumthang Chu district (Marlung)
and Upper Kuru Chu district (Gong La).
Ecology: Alpine turf and particularly screes, 3950–5500m. Flowers June–September.
Illustration [Fig. 51 i,j]
Specimen List 
Cortiella cortioides (C.Norman) M.F.Watson
Cortia hookeri C.B.Clarke p.p.
Bhutan: C—Thimphu district
(Dungtso La); N—Upper Mo Chu district (Lingshi La), Upper Mangde
Chu district (Gyophu La) and Upper Kuru Chu district (Narim Thang).
Ecology: Screes, rocky slopes and free draining sandy areas, 4000–5400m. Flowers (June–)July–September(–October).
Specimen List