Ochlandra Thwaites
  • Enum. Pl. Zeyl.: 376 (1864) 


Notes: Distribution: India, Sri Lanka

General Description

HABIT Perennial. Rhizomes short; pachymorph. Culms erect (8/9), or leaning (2/9); 200-434.8-780 cm long; woody. Culm-internodes terete. Culm-nodes flush with internodes (1/3), or swollen (2/3). 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 (5/7), or deciduous (2/7); auriculate (4/4). Culm-sheath blade linear (6/8), or lanceolate (3/8). Leaf-sheath auricles absent (4), or erect (1), or falcate (7). Ligule an eciliate membrane (11), or a ciliolate membrane (1). Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades persistent (11), 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 (10), 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 (11); in stellate clusters (4/11), or untidy tufts (7/11); with glumaceous subtending bracts (9), or spathaceous subtending bracts (3); with axillary buds at base of spikelet; leafy between clusters (1/9), or leafless between clusters (8/9). FERTILE SPIKELETS Spikelets comprising 3-5 basal sterile florets (1/1); 1 fertile florets; with a barren rhachilla extension (1/1). Spikelets lanceolate (6), or ovate (9); subterete; 15-32.89-65 mm long; falling entire. GLUMES Glumes two (1), or several (11); 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 glabrous (11), 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 (1/11), or ovate (10/11); 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 (9), or pilose (2), or hispid (1); with simple hairs (2/3), or tubercle-based hairs (1/3). Upper glume apex acute (8/10), or acuminate (2/10); muticous (3/11), or mucronate (8/11). FLORETS Fertile lemma oblong (1), or ovate (11); chartaceous; without keel; 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 without grooves (11), or with a median groove (1). Lemma margins convolute; covering most of palea; eciliate (11), or ciliate (1). Lemma apex emarginate (1), or acute (7), or acuminate (4); muticous (8), or mucronate (4). Palea not rolled (4), or tightly convolute around flower (8); 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 (8), or 2-keeled (4). Palea surface glabrous (11), or pilose (1). FLOWER Lodicules 1 (1), or 3 (4), or several (7); membranous; glabrous (10), or ciliate (3); 2-toothed (1/1); truncate (1/2), or acute (1/2). Anthers 15-46-120. Stigmas 3-4 (1), or 5 (6), 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 (3/7), or ovoid (4/7). DISTRIBUTION Tropical Asia.

Distribution Map

 
  • Native distribution
  • Introduced distribution
Found in
  • Asia-Tropical Indian Subcontinent India
  • Sri Lanka
Introduced into
  • Southern America Caribbean Puerto Rico

  Bibliography

  • 1 Govaerts, R.H.A. (2011). World checklist of selected plant families published update. Facilitated by the Trustees of the Royal Botanic Gardens, Kew.

 Information From

GrassBase - The Online World Grass Flora
http://www.kew.org/data/grasses-db/
Clayton, W.D., Vorontsova, M.S., Harman, K.T. and Williamson, H. (2006 onwards). GrassBase - The Online World Grass Flora. http://www.kew.org/data/grasses-db.html. [accessed 24 January 2012; 14:30 GMT]
  • A © Copyright The Board of Trustees, Royal Botanic Gardens, Kew.
eMonocot
http://e-monocot.org
eMonocot. (2010, 1st November). Retrieved Wednesday, 8th February, 2012, from http://e-monocot.org.
  • B Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
World Checklist of Selected Plant Families
http://apps.kew.org/wcsp/
WCSP 2014. 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://apps.kew.org/wcsp/ Retrieved 2011 onwards
  • C See http://kew.org/about-kew/website-information/legal-notices/index.htm You may use data on these Terms and Conditions and on further condition that: The data is not used for commercial purposes; You may copy and retain data solely for scholarly, educational or research purposes; You may not publish our data, except for small extracts provided for illustrative purposes and duly acknowledged; You acknowledge the source of the data by the words "With the permission of the Trustees of the Royal Botanic Gardens, Kew" in a position which is reasonably prominent in view of your use of the data; Any other use of data or any other content from this website may only be made with our prior written agreement.