GrassBase - The Online World Grass Flora

Descriptions

W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Fargesia

HABIT Perennial. Rhizomes absent (9), or short (78), or elongated (1); pachymorph (78/78). Culms erect (50/50); 30.4–406–1500 cm long; woody; without nodal roots (11/11). Culm-internodes terete (86/86). Culm-nodes flush with internodes (8/17), or swollen (10/17); without obvious supra-nodal ridge (5/13), or with distinct supra-nodal ridge (13/13). Lateral branches suffrutescent (1), or dendroid (87). Branch complement one (2/82), or two (1/82), or three (6/82), or several (68/82), or many (10/82); in a horizontal line (24/25), or in an irregular line (1/25); at the node (86), or subtended by a bare patch above the node (2); with subequal branches (20/20); thinner than stem (46/46). Culm-sheaths persistent (39/61), or tardily deciduous (14/61), or deciduous but leaving a persistent girdle (6/61), or deciduous (8/61); without auricles (63/66), or auriculate (5/66). Culm-sheath blade linear (46/68), or lanceolate (46/68), or ovate (1/68), or triangular (17/68); narrower than sheath (17/19), or as wide as sheath at base (2/19). Leaf-sheath auricles absent (80), or erect (4), or falcate (4). Ligule an eciliate membrane (73), or a ciliolate membrane (16), or absent (1). Leaf-blade base without a false petiole (4), or with a brief petiole-like connection to sheath. Leaf-blades persistent (86), or deciduous at the ligule (2); linear (7), or lanceolate (85), or oblong (3), or ovate (2); herbaceous (31), or chartaceous (57); stiff (1), or firm (87). Leaf-blade venation without cross veins (11), or with obscure cross veins (23), or with distinct cross veins (54).

INFLORESCENCE Synflorescence simple (20/24), or compound (4/24). Inflorescence a panicle (6/24), or composed of racemes (18/24); subtended by an unspecialized leaf-sheath (10/24), or an inflated leaf-sheath (1/24), or a spatheole (13/24); exserted (6/24), or embraced at base by subtending leaf (18/24). Spatheole elliptic (3/3).

Panicle open (3/3).

Racemes single (18/18); linear (15/18), or oblong (3/18); unilateral (5/5); bearing 2 fertile spikelets on each (1/9), or 3 fertile spikelets on each (6/9), or 4 fertile spikelets on each (7/9), or 5 fertile spikelets on each (6/9), or 6 fertile spikelets on each (5/9), or 7 fertile spikelets on each (3/9), or 8–11 fertile spikelets on each (1/9). Spikelet packing crowded (3/18), or contiguous (15/18).

Spikelets solitary (24/24). Fertile spikelets sessile and pedicelled (1/24), or pedicelled (23/24).

FERTILE SPIKELETS Spikelets comprising 2–5–10 fertile florets; with diminished florets at the apex (23/23). Spikelets linear (3/23), or lanceolate (3/23), or oblong (17/23); laterally compressed (24/24); 2.5–24.22–60 mm long; breaking up at maturity (24/24); disarticulating below each fertile floret (24/24). Rhachilla internodes definite (24/24); glabrous (12/24), or sparsely hairy (1/24), or pubescent (8/24), or pilose (7/24). Floret callus pubescent (2/6), or pilose (4/6).

GLUMES Glumes one the upper absent or obscure (1/24), or two (24/24), or several (1/24); persistent (22/22); shorter than spikelet (23/23). Lower glume linear (1/23), or lanceolate (21/23), or ovate (2/23); 0.33–0.68–0.75 length of upper glume; chartaceous (21/22), or herbaceous (1/22); without keels (21/22), or 1-keeled (1/22); 1–2 -veined (1/11), or 3 -veined (9/11), or 4 -veined (4/11), or 5 -veined (6/11). Lower glume lateral veins absent (1/24), or distinct (24/24). Lower glume surface without pits (24/24); glabrous (22/24), or puberulous (3/24). Lower glume apex obtuse (1/20), or acute (6/20), or acuminate (7/20), or attenuate (4/20), or setaceously attenuate (2/20), or cuspidate (2/20); muticous (19/23), or awned (4/23). Upper glume lanceolate (17/23), or elliptic (4/23), or ovate (2/23); 0.6–0.8167–0.9 length of adjacent fertile lemma; chartaceous (21/22), or herbaceous (1/22); without keels (20/22), or 1-keeled (2/22); 3 -veined (2/11), or 4 -veined (1/11), or 5 -veined (3/11), or 6 -veined (1/11), or 7 -veined (7/11), or 8 -veined (3/11), or 9 -veined (4/11). Upper glume lateral veins with cross-veins (1/1). Upper glume surface smooth (23/24), or scabrous (1/24); glabrous (21/24), or puberulous (3/24), or hispid (1/24). Upper glume apex obtuse (1/20), or acute (7/20), or acuminate (6/20), or attenuate (3/20), or setaceously attenuate (3/20), or cuspidate (2/20); muticous (19/23), or awned (4/23); 1 -awned (2/2).

FLORETS Fertile lemma lanceolate (16/20), or elliptic (2/20), or oblong (1/20), or ovate (7/20); chartaceous (21/22), or herbaceous (1/22); without keel (23/23); wingless (24/24); 5 -veined (1/16), or 7 -veined (6/16), or 8 -veined (2/16), or 9 -veined (11/16), or 10–11 -veined (5/16), or 12–13 -veined (1/16). Lemma surface smooth (23/24), or scaberulous (1/24), or scabrous (1/24); unwrinkled (24/24); without grooves (24/24); glabrous (12/24), or puberulous (9/24), or pubescent (4/24), or hispidulous (1/24); hairy on back (12/14), or on veins (1/14), or between veins (1/14). Lemma margins eciliate (16/24), or ciliolate (6/24), or ciliate (3/24), or pubescent (1/24). Lemma apex acute (1/18), or acuminate (8/18), or attenuate (5/18), or setaceously attenuate (2/18), or cuspidate (2/18), or rostrate (1/18); muticous (20/24), or mucronate (1/24), or awned (3/24); 1 -awned (3/3). Palea membranous (23/24), or chartaceous (1/24); 2 -veined (3/5), or 4 -veined (2/5). Palea keels eciliate (10/24), or pubescent (1/24), or ciliolate (7/24), or ciliate (6/24). Palea surface glabrous (20/24), or puberulous (2/24), or pubescent (1/24), or pilose (1/24). Palea apex entire (2/10), or dentate (10/10). Apical sterile florets resembling fertile though underdeveloped (23/23).

FLOWER Lodicules 3 (22/22); membranous (1/1); glabrous (9/22), or ciliate (13/22). Anthers 3 (22/22). Stigmas 2 (13/22), or 3 (12/22). Ovary glabrous (11/11).

FRUIT Caryopsis with adherent pericarp (21/21); linear (1/2), or ellipsoid (1/2); apex unappendaged (4/4).

DISTRIBUTION Temperate Asia (85), or Tropical Asia (4).

Please cite this publication as detailed in How to Cite Version: 27th January 2014.