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Pakistan | Family List | Brassicaceae | Draba

Draba trinervis O.E. Schulz in Engler, Pflanzenr. 89 (IV. 105). 131. 1927. Hedge in Rech. f., l.c. 180.

Draba trinervis

Credit: Shaukat

Perennial, ± laxly caespitose herbs; rootstock flexuose, much branched, covered with withered leaf bases and leaves; scapes 1-5 cm long, aphyllous. Radical leaves rosulate, linear-elliptic, acute, entire, 5-8 mm long, 1.5-2.5 mm broad, ciliately hairy with simple (rarely forked) hairs, 3 (-5)-parallel veined (more distinct on the ventral side). Racemes 5-10-flowered, slightly lax in fruit. Flowers c. 5 mm across, yellow; pedicels 6-10 mm long in fruit, glabrous, ascending or spreading. Sepals 2.5-3 mm long. Petals 4.5-5.5 mm long, c.3 mm broad, apex ± rounded, often slightly oblique. Stamens c. 2.5 : 3 mm long; anthers c. 0.5 mm long. Siliculae 4-6 mm long, c. 3 mm broad, ovoid, glabrous; valves obscurely veined; style c.l (-1.5) mm long with short, depressed stigma; septum not veined; seeds 4-5 in each locule, c.l mm long, ovate-oblong, brownish.

Fl. Per. - May-June.

Type: Pakistan, Chitral, A. Barrett (K), and several other syntypes.

Distribution: N.W. Himalaya, Pakistan and Afghanistan.

Easily recognized by its 3-nerved leaves, ciliately hairy with usually simple hairs.


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