Pseudosasa Makino ex Nakai

nonem

Morphology General Habit

Perennial. Rhizomes absent (3), or elongated (16); leptomorph (16/16). Culms erect (15/15); 40-312.6-1300 cm long; woody; without nodal roots (1/1). Culm-internodes terete. Culm-nodes flush with internodes (4/6), or swollen (2/6); with distinct supra-nodal ridge (2/2). Lateral branches suffrutescent (1), or dendroid (18). Branch complement one (11/18), or two (12/18), or three (13/18), or several (1/18); solitary (2/2); as thick as stem (2/2). Culm-sheaths persistent (4/9), or tardily deciduous (3/9), or deciduous but leaving a persistent girdle (1/9), or deciduous (3/9); without auricles (9/13), or auriculate (4/13). Culm-sheath blade linear (6/15), or lanceolate (12/15), or triangular (3/15); narrower than sheath (1/2), or as wide as sheath at base (1/2). Leaf-sheath auricles absent (15), or erect (1), or falcate (5). Ligule an eciliate membrane (10), or a ciliolate membrane (8), or a ciliate membrane (1). Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades linear (1), or lanceolate (18), or elliptic (3), or oblong (4); herbaceous (17), or chartaceous (2). Leaf-blade venation without cross veins (8), or with obscure cross veins (4), or with distinct cross veins (7).

Morphology Reproductive morphology Inflorescences

Inflorescence a panicle (3/7), or composed of racemes (3/7), or comprising only a few spikelets (1/7); exserted (6/7), or embraced at base by subtending leaf (2/7). Panicle open (2/3), or contracted (1/3). Racemes single (2/2); bearing 2 fertile spikelets on each (1/2), or 3-5 fertile spikelets on each (2/2). Spikelets solitary (7/7). Fertile spikelets pedicelled (7/7).

Morphology Reproductive morphology Inflorescences Spikelets

Spikelets comprising 2-3 fertile florets (2/7), or 4 fertile florets (4/7), or 5-7 fertile florets (5/7), or 8 fertile florets (4/7), or 9-11 fertile florets (3/7), or 12 fertile florets (2/7), or 13-14 fertile florets (1/7); with diminished florets at the apex (7/7). Spikelets linear (5/7), or lanceolate (1/7), or oblong (1/7); laterally compressed (7/7); 10-29.71-55 mm long; breaking up at maturity (7/7); disarticulating below each fertile floret (7/7). Rhachilla internodes brief up to lowest fertile floret (6/7), or elongated between glumes (1/7); glabrous (3/7), or pubescent (4/7), or pilose (1/7). Floret callus pubescent (1/2), or pilose (1/2).

Fertile

Spikelets comprising 2-3 fertile florets (2/7), or 4 fertile florets (4/7), or 5-7 fertile florets (5/7), or 8 fertile florets (4/7), or 9-11 fertile florets (3/7), or 12 fertile florets (2/7), or 13-14 fertile florets (1/7); with diminished florets at the apex (7/7). Spikelets linear (5/7), or lanceolate (1/7), or oblong (1/7); laterally compressed (7/7); 10-29.71-55 mm long; breaking up at maturity (7/7); disarticulating below each fertile floret (7/7). Rhachilla internodes brief up to lowest fertile floret (6/7), or elongated between glumes (1/7); glabrous (3/7), or pubescent (4/7), or pilose (1/7). Floret callus pubescent (1/2), or pilose (1/2).

Morphology Reproductive morphology Inflorescences Bracts Glume

Glumes two (6/7), or several (1/7); persistent (7/7); shorter than spikelet (7/7). Lower glume lanceolate (5/5); 0.5-0.65-0.8 length of upper glume; chartaceous (5/5); without keels (5/5); 5 -veined (2/2), or 6-9 -veined (1/2). Lower glume surface glabrous (5/7), or puberulous (1/7), or pubescent (1/7). Lower glume apex acute (3/4), or acuminate (1/4). Upper glume lanceolate (4/6), or elliptic (1/6), or oblong (1/6); 1 length of adjacent fertile lemma; chartaceous (5/5); without keels (5/5); 5-6 -veined (1/2), or 7-9 -veined (2/2). Upper glume surface glabrous (5/7), or puberulous (1/7), or pubescent (1/7). Upper glume apex acute (4/5), or acuminate (1/5).

Morphology Reproductive morphology Flowers Florets

Fertile lemma lanceolate (1/7), or oblong (1/7), or ovate (7/7); chartaceous (7/7); without keel (7/7); 9 -veined (2/3), or 10-11 -veined (1/3), or 17-23 -veined (1/3). Lemma surface glabrous (4/7), or puberulous (2/7), or pubescent (2/7). Lemma margins eciliate (5/7), or ciliate (2/7). Lemma apex acute (1/5), or acuminate (4/5); muticous (7/7), or mucronate (1/7), or awned (1/7); 1 -awned (1/1). Palea 0.9-0.95-1 length of lemma; membranous (6/7), or chartaceous (1/7); 2 -veined (2/3), or 8-10 -veined (1/3). Palea keels eciliate (1/7), or ciliolate (2/7), or ciliate (4/7). Palea surface glabrous (5/7), or pubescent (2/7). Palea apex entire (2/2). Apical sterile florets resembling fertile though underdeveloped (7/7).

Morphology Reproductive morphology Flowers

Lodicules 3 (7/7); glabrous (2/7), or ciliate (5/7). Anthers 3 (7/7), or 4 (1/7). Stigmas 2 (1/7), or 3 (6/7). Ovary glabrous (4/5), or pubescent on apex (1/5).

Morphology Reproductive morphology Fruits

Caryopsis with adherent pericarp (7/7); oblong (1/2), or ovoid (1/2); apex unappendaged (2/2).

Distribution

Europe (1), or Africa (1), or Temperate Asia, or Tropical Asia (1), or Australasia (2).