Stipa verticillata Nees ex Spreng.
Details
Nomenclature
Nees ex Spreng.
Spreng.
1827
ICN
Stipa verticillata Nees ex Spreng.
species
Stipa verticillata
Classification
Descriptions
Stipa verticillata Nees ex Spreng.
Stout caespitose or shortly rhizomatous erect perennial, prolifically branching at nodes; branching extravaginal, cataphylls numerous. Sheath to 10 cm, short hairs below, glabrous above, terminating in a short tuft of hairs. Ligule to 2 mm, erose, truncate, collar curved. Lamina to 60 cm × 4 mm, flat, abaxially antrorsely scabrous with fine prickle teeth, adaxially antrorsely scabrous or with long hairs, margins antrorsely scabrous. Culms to 2 m, bambusiform, glabrous; nodes brown, rough. Inflorescence to 50 cm, subverticillate, branches ascending-spreading; rachis smooth below, scabrous above, branches and pedicels scabrous. Glumes equal, 3-4 mm, narrow, ± = lemma, green-suffused, spreading at maturity, acuminate, sometimes shortly awned but mostly erose, 3-nerved, nerves scabrid, < awn column. Lemma 3 mm, becoming dark brown at maturity, clothed in long white appressed hairs but tubercular-scabrous beneath and at apex, lobes minute; awn to 35 mm, 1-geniculate or sometimes straight, with short stiff hairs, column straight, scabrous, 7-12 mm, arista to 25 mm. Palea 1-1.5 mm, ligulate, c. ½ length of lemma, nerves with a few scattered hairs or glabrous, internerves darker, apex ciliolate. Callus to 0.2 mm, short, blunt and rounded, loosely clothed in short white hairs to 0.5 mm. Lodicules 2, to 1.3 mm, ligulate, ± = palea. Anthers 3, penicillate and caudate, to 1.8 mm. Chasmogamous.
Taxonomic concepts
Stipa verticillata Nees ex Spreng.
Stipa verticillata Nees ex Spreng.
Identification keys
Metadata
1ab4045b-3e11-4d18-a652-e3b3742dc60e
scientific name
Names_Plants
13 March 2002
17 October 2005