Ochlandra

HABIT Perennial. Rhizomes short; pachymorph. Culms erect (7/8), or leaning (1/8); 200–414.4–600 cm long; woody. Culm-internodes terete. Culm-nodes swollen (2/2). Lateral branches dendroid. Branch complement several (1/1); in a horizontal line (1/1); with 1 branch dominant (1/1); thinner than stem (1/1). Culm-sheaths persistent (4/6), or deciduous (2/6); auriculate (4/4). Culm-sheath blade linear (5/7), or lanceolate (3/7). Leaf-sheath auricles absent (4), or falcate (7). Ligule an eciliate membrane (10), or a ciliolate membrane (1). Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades persistent (10), or deciduous at the ligule (1); lanceolate, or oblong (3). Leaf-blade midrib evident (2/4), or conspicuous (2/4). Leaf-blade venation without cross veins (9), or with obscure cross veins (1), or with distinct cross veins (1). Leaf-blade margins cartilaginous (3/3).

INFLORESCENCE Synflorescence bractiferous; linear (1), or clustered at the nodes (10); in stellate clusters (4/10), or untidy tufts (6/10); with glumaceous subtending bracts (8), or spathaceous subtending bracts (3); with axillary buds at base of spikelet; leafy between clusters (1/8), or leafless between clusters (7/8).

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; with a barren rhachilla extension (1/1). Spikelets lanceolate (6), or ovate (8); subterete; 15–34.06–65 mm long; falling entire.

GLUMES Glumes two (1), or several (10); shorter than spikelet. Lower glume elliptic (1/4), or oblong (1/4), or ovate (2/4); chartaceous (1/1); without keels (1/1); 21–33 -veined (1/1). Lower glume surface without pits; glabrous (10), or hispid (1). Lower glume apex truncate (1/4), or acute (2/4), or acuminate (1/4); muticous (2/4), or mucronate (2/4). Upper glume elliptic (1/10), or ovate (9/10); 40–47 -veined (1/2), or 48 -veined (2/2), or 49–56 -veined (1/2). Upper glume lateral veins with cross-veins (1/1). Upper glume surface glabrous (8), or pilose (2), or hispid (1); with simple hairs (2/3), or tubercle-based hairs (1/3). Upper glume apex acute (7/9), or acuminate (2/9); muticous (3/10), or mucronate (7/10).

FLORETS Fertile lemma oblong (1), or ovate (10); chartaceous; without keel; wingless; 18 -veined (1/4), or 20–29 -veined (1/4), or 30–36 -veined (2/4), or 37–39 -veined (1/4), or 40–48 -veined (2/4), or 49–70 -veined (1/4). Lemma surface unwrinkled; without grooves (10), or with a median groove (1). Lemma margins convolute; covering most of palea; eciliate (10), or ciliate (1). Lemma apex emarginate (1), or acute (6), or acuminate (4); muticous (7), or mucronate (4). Palea not rolled (4), or tightly convolute around flower (7); 1 length of lemma; 12 -veined (1/4), or 15–25 -veined (1/4), or 30–32 -veined (1/4), or 33 -veined (2/4), or 34–48 -veined (1/4); without keels (7), or 2-keeled (4). Palea surface glabrous (10), or pilose (1).

FLOWER Lodicules 1 (1), or 3 (4), or several (6); membranous; glabrous (9), or ciliate (3); 2-toothed (1/1); truncate (1/2), or acute (1/2). Anthers 15–48–120. Stigmas 3–4 (1), or 5 (5), or 6 (3), or 7 (4), or 8 (2), or 9 (1). Ovary with a steeple-like appendage; glabrous (9/9).

FRUIT Caryopsis with fleshy pericarp; oblong (2/6), or ovoid (4/6).

DISTRIBUTION Tropical Asia.

Please cite this publication as detailed in How to Cite Version: 3rd February 2016.