Lolium rigidum

الوصف النباتي

الأوراق

Leaves: Blades flat or slightly conduplicate, 4–15 cm long, 2–4 mm wide, scabrid on margins and veins, glabrous above and beneath; sheaths smooth; ligule short, truncate. Auricles small but distinct, clasping the stem.

الأزهار

Inflorescence & flowers: Spike slender, 5–15 cm long, stiff and erect; rachis straight, firm, prominently angular. Spikelets solitary, alternately arranged edgewise along the rachis, 7–15 mm long, each with 4–8 florets. Glumes unequal—lower glume absent or rudimentary on lower spikelets, upper glume narrowly lanceolate, one-nerved, nearly as long as the spikelet. Lemmas 6–8 mm long, awned, the awn 3–10 mm, rigid, straight or slightly curved. Palea shorter, 2-keeled.

الثمار والبذور

Fruit: Caryopsis oblong, smooth, 3–4 mm long, tightly enclosed within the palea and lemma.

مواسم النبات

الفنلوجية

Phenology: Flowers and fruits from April to June.

الانتشار الموثق

Lebanese distribution: Common throughout Mount Lebanon and the Beqaa Valley , especially Barouk , Dahr el-Baïdar , and Ras Baalbeck ; abundant in fallow lands, roadsides, and cereal fields , often forming part of the annual spring grass flora.

Native to: Afghanistan, Albania, Algeria, Bulgaria, Canary Is., China North-Central, China Southeast, Corse, Cyprus, East Aegean Is., Egypt, France, Greece, Gulf States, Iran, Iraq, Italy, Kriti, Krym, Kuwait, Lebanon-Syria, Libya, Madeira, Mauritania, Morocco, North Caucasus, NW. Balkan Pen., Pakistan, Palestine, Portugal, Sardegna, Saudi Arabia, Selvagens, Sicilia, Spain, Switzerland, Transcaucasus, Tunisia, Turkmenistan, Türkiye, Türkiye-in-Europe, West Himalaya, Western Sahara, Yemen (POWO).

Introduced into: Argentina Northeast, Argentina South, Arizona, Austria, Azores, California, Cape Provinces, Chatham Is., Chile Central, Chile South, Czechia-Slovakia, Germany, Great Britain, Japan, Kermadec Is., Khabarovsk, KwaZulu-Natal, Louisiana, Manitoba, Mississippi, Missouri, Namibia, New South Wales, New Zealand North, Norfolk Is., Northern Provinces, Northern Territory, Oregon, Primorye, Queensland, South Australia, Sri Lanka, St.Helena, Tasmania, Texas, Victoria, Western Australia (POWO).

الارتفاع الموثق

الارتفاع

800 m

لمحة نباتية

بنية النبات

Life-form & habit: Annual grass forming dense tufts, 20–70 cm tall. Culms erect or ascending, slender but rigid, smooth and glabrous. Nodes dark and slightly thickened. The whole plant bright green, turning straw-coloured at maturity.

دورة الحياة

حولية

الفصيلة والتصنيف

الاسم العلمي كما ورد

Lolium rigidum

الفصيلة

نجيلية

القبول التصنيفي للاسم لم يُحسم في هذه النسخة.

نباتات من الفصيلة نفسها

Imperata cylindrica

بوص جنوبي

Phragmites australis subsp. australis (Cavanilles) Trinius ex Steudel

مكانس

Piptatherum miliaceum E.Fourn., 1866

Stipa arabica