|Scientific name:||Lactuca tuberosa Jacq.|
|Synonym name:||Lactuca cretica Desf.|
|Common name:||Tuberous Lettuce|
|Hebrew name:||חסה כחולת-פרחים|
|Arabic name:||سْتِبْتورَمْفوس عُسْقولي|
|Family:||Compositae / Asteraceae, מורכבים|
|Stems:||40-60 cm high; stems solitary, erect; occasionally branched above; often with reddish tinge; containing a milky latex|
|Leaves:||Alternate, rosette, dissected, pinnate, hairy|
|Inflorescence:||Divaricate branching, paniculiform, 3-45-capitulate, glabrous, glaucous|
|Flowers:||Involucral bracts up to 40mm; flowers pale yellow, often tinged greyish or purplish on ligules beneath, or lilac-purple, 2.4-2.8 cm|
|Fruits / pods:||Achenes compressed, elliptical, 1- to 3-ribbed, minutely hairy, rugulose; beak, pale, very long, slender 1 1/2-3 times as long as body; pappus of 2 rows of simple hairs, inner 10.5-12 mm, copious, outer 0.3 mm|
|Flowering Period:||April, May|
|Distribution:||Mediterranean Woodlands and Shrublands, Semi-steppe shrublands, Montane vegetation of Mt. Hermon|
|Chorotype:||Med - Irano-Turanian|
Derivation of the botanical name:
Lactuca, Latin lact, milk, referring to the milky sap.
tuberosa, tuber, a lump, tumor, hump; producing tubers or swollen into a tuber, tuberous.
cretica, from the island of Crete.
The Hebrew name: חסה, hasa (New Hebrew), lettuce; from Aramaic: חסא, which is of uncertain origin.