Brassicaceae |
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Alyssum desertorum STAPF. var. prostratum DUDLEY |
Alyssum desertorum STAPF. var. prostratum DUDLEY |
Alyssum L. |
A. desertorum Stapf. in Denk. Akad. Wiss. Wien, Math.-Nat. Kl. 51: 302 (1886). Syn: A. minimum Willd., Sp. PL 3(1): 464 (1800) p.p. non L.; Psilonema minutum (Willd.) Schur, Enum. PI. Transs. 62 (1866). Annual, stems up to 20 cm. Indumentum of sublepidote stellate hairs with many short rays. Racemes elongate and cylindrical. Pedicels suberect to spreading and horizontal, with strigose indumentum. Petals (1 .5-)2-3(-3-5) x 0.5-1 mm, entire or emarginate, pale yellow. Fruits ovate to orbicular, emarginate, glabrous, (2-)2.5-4 mm long and wide; valves equally inflated at the centre, with ± flattened margins. Styl'e glabrous, 0.4-1 mm. Seeds narrowly winged. 1. Plant erect or decumbent; racemes elongate, (3-)4-10cm, many-fruited; leaves linear-lanceolate to oblanceolate var. desertorum 1. Plant prostrate, reduced; racemes condensed, 1-2cm,few-fruited; leaves ob-lanceolate to spathulate- var. prostratum var. prostratum Dudley in Notes R.B.G. Edinb. 24: 159, f. 2A (1962). Fl. 3-4. Open places, 600-2100 m. Type: Iran, ad Teheran in desertis, c. 1200 m, 26 ii 1892, Bornmüller 2170 (holo. E! iso. G! K! OXF! W!). Scattered. A2(A) Istanbul: Hatia to Fenerbahçe, 1917, Azn.! A6 Tokat: Tokat, 600-700 m. Bornm. 1893:3245! B4 Ankara: Ankara, Merton 3282 p.p.! C2 Burdur: Salda G., ar. Yesilova, 1100 m, D. 25622! Syrian Desert, N. & W. Iran, Soviet Armenia. This variety is possibly much commoner in Turkey than the above records suggest. |