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Published In: Flora von Sachsen 1: 538. 1842. (Fl. Sachsen) Name publication detail

Project Name Data (Last Modified On 6/2/2011)
Acceptance : Accepted
Project Data     (Last Modified On 6/3/2011)
Flower/Fruit: Fl. Per.: April-June.
Type: Type: Described from Europe, Scandinavia.
Distribution: Distribution: Mediterranean region, Europe and Temp. Asia.; introduced else-where.
Comment/Acknowledgements: I have not seen any authentic specimen of this species from Baluchistan. Some forms of Arabidopsis pumila superficially look very much like this species in the absence of flowers, and Hotson's gathering from Makran (cited as Arabidopsis thaliana by Blatter et al in Journ. Ind. Bot. 1: 57. 1919) is most probably a misidentification of Arabidopsis pumila. It is a very variable species in size and some forms are without cauline leaves.
Photo: Arabidopsis thaliana (L.) Heynh. (Photo)
Map Location: A-7 Chitral: Damgol, Toppin 22 (K); Baumboretgol, on small scree, corolla white, Stainton 2231 (BM) ; Ziarat, Lowarai pass, on stony ground, fls. white, Stainton 2316 (BM) ; B-7 Hazara, Kaghan, stony ground, common, fls. white, Jafri & Ali 3393 (KUH) ; Kaghan valley, Inayat 19197 (K); Abbottabad, R.R. Stewart 16371 (RAW) ; B-8 Kashmir : Jhelum valley, Duthie 10895 (E) ; Lidder valley, Duthie 13345 (E) ; without locality, Thomson s.n. (K) ; Inayat s.n. (K) ; Palgam, Inayat 25489 (K) ; Matyan, R.R. Stewart 9952 (K) ; Nishat, Falconer 2172 (K) ; B-9 Baltistan, Hassora, Winterbottom 757 (K) ; Dras valley, Duthie 13686 (BM) ; Marpu nulla, Duthie s.n. (BM); Dras, Schlagintweit s.n. (BM); Mt. Harmosh, Ludlow 246 (BM); Karakorum: Clarke 30350 (K); Baltistan, Satpura to Deosai, Webster & Nasir 6344 (RAW) ; Karakorum, Gondokora glacier, Webster & .Nasir 6081 (RAW) ; C-7 Rawalpindi Dist.: near Rawalpindi, Aitchison 1 142 (K) ; without locality, J L. Stewart s.n. (K, E).


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Annual, 5-20 (-45) cm tall, erect, simple or branched, usually from the base, often hairy below and suhglabrous above with short, branched or simple hairs. Basal leaves rosulate, obovate-oblong, 15-50 mm long, 5-10 mm broad, subsessile, slightly to distinctly toothed or entire; upper leaves, short, distant, oblong or linear, cuneate below. sessile. entire or obscurely toothed. Racemes (8-) 15-30 (-40)-flowered, up to 20 cm long in fruit. Flowers 2-3 mm across, white or pale pinkish; pedicels (5-) 8-15 mm long in fruit, filiform, subspreading or ascending. Sepals 1.5-2 mm long. Petals 3-4 mm long, 1 mm broad. Stamens 6 or 4, c. 1.5: 2.5 mm long (outer 2 sometimes suppressed) ; anthers c. 0.5 mm long. Siliquae (10-) 12-18 mm long, 1 mm broad, linear, subcylindrical, often somewhat upcurved, glabrous; valves 1-veined; stigma short, depressed, sub-sessile or on c. 0.5 mm long style; septum not veined; seeds usually 20-30 in each locule, c. 0.5 mm long.
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