Flowering

  • Jan1
  • Feb2
  • Mar3
  • Apr4
  • May5
  • Jun6
  • Jul7
  • Aug8
  • Sep9
  • Oct10
  • Nov11
  • Dec12
Not in Bloom

Distribution

ריסן דק - מפת תפוצה

Description & Remarks

Vollesen (2000), in his revision of the genus Blepharis decided that there is only one species of that genus in Israel. The common opinion, as presented in Feinbrun (1978 – Flora Palaestina) that there are two species – one confined to an area with 250-350 mm mean annual rainfall, and the other to 20-100 mm mean annual rainfall, was rejected. The profound researches carried out by Prof. Y. Gutermann displayed the morphological and physiological-ecological differences between the two “forms”.

Vollesen, K. 2000. Blepharis (Acanthaceae): a taxonomic revision. Kew: Royal Botanic Gardens.

@More on this species in [useful_plants_c3 “Useful Plants” chapter C part 3], December 2007.

See more from the Botanic Library

Family

Additional Names

Hebrew with Vowels:
רִיסָן דַּק
Synonym (Scientific):
Blepharis ciliaris (sensu Fenbrun-Dothan 1978)

תכונות וזיהוי

  • עשבים רב-שנתיים, ענפיהם מעין שיבולים בעלי עלים קוצניים; בחיק רובם פרח בעל כותרת חד-שפתנית.

    עשבים רב-שנתיים, ענפיהם מעין שיבולים בעלי עלים קוצניים; בחיק רובם פרח בעל כותרת חד-שפתנית.

  • הנבטים ניכרים בזוג פסיגים דמויי סהר, מעליהם צומחים עלים

    הנבטים ניכרים בזוג פסיגים דמויי סהר, מעליהם צומחים עלים "רגילים".

Life form (Raunkiaer):
chamaephyte
Spinescence:
leaves
Succulence:
non-succulent
Summer Shedding:
perennating
Petal or tepal color:
D.Blue
Sexuality and Reproductive Morphology:
Flowers hermaphrodite only
Sporangia or Seed Homogeneity:
Homogeneous seeds-fruits
Flowering Time:
August, October, December, July, June, May, November, September
Leaf arrangement:
opposite (two leaves per node)
Leaf Type:
dissected, dissected once
Leaf or leaflet margin:
dentate or serrate
Stipule:
absent
Habitat:
Batha, Phrygana, Desert
Chorotype:
Irano-Turanian - Saharo-Arabian
Drought Resistence:
Salt Resistance:
glycophyte
Synanthrop:
obligate natural

Taxonomy

Superdivision:
Spermatophyta
Division:
Angiospermae
Class:
Dicotyledoneae
Family:
Acanthaceae
Genus:
Blepharis