Lactuca tuberosa, Lactuca cretica, Tuberous Lettuce,
Hebrew: חסה כחולת-פרחים, Arabic: سْتِبْتورَمْفوس عُسْقولي

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

ישראל, פרחים, צמחי בר, תמונות

Life form:  Hemicryptophyte
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
Habitat:  Batha, Phrygana
Distribution:  Mediterranean Woodlands and Shrublands, Semi-steppe shrublands, Montane vegetation of Mt. Hermon
Chorotype:   Med - Irano-Turanian
Summer shedding:  Ephemeral

Lactuca tuberosa, Lactuca cretica, Tuberous Lettuce, חסה כחולת-פרחים

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.
  • The standard author abbreviation Jacq. is used to indicate Nikolaus Joseph von Jacquin (1727 – 1817), a Dutch scientist who studied medicine, chemistry and botany.
  • The standard author abbreviation Desf. is used to indicate René Louiche Desfontaines (1750 – 1833), a French botanist.

Lactuca tuberosa, Lactuca cretica, Tuberous Lettuce, חסה כחולת-פרחים