Location ²

Peru, Bolivia, Venezuela, Colombia, French Guiana, Ecuador, Suriname and Brazil.

Description ²

Clumping forming plant, spiny, woody bamboo with short rhizomes. Grows upto 1.8m tall. Occurrence is estimated to be 4million km2. Occupies in gaps and understory in evergreen forest. Tree basal is low where bamboo density is high. 30 years monocarpic life cycle. All individual (genets) flower only once, produce. Produce massive quantities of seed and then die.

HABIT Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; 1000–1800 cm long; woody; with root thorns from the nodes. Culm-internodes thin-walled. Lateral branches dendroid. Bud complement 1. Branch complement three; thinner than stem. Culm-sheaths without auricles. Ligule an eciliate membrane. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.5–0.6 cm long. Leaf-blades lanceolate, or elliptic; 13–17 cm long; 20–35 mm wide. Leaf-blade apex acuminate.

INFLORESCENCE Synflorescence bractiferous; scanty; with glumaceous subtending bracts; with axillary buds at base of spikelet; prophyllate below lateral spikelets. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 3 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 17–25 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes obscured by lemmas.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume ovate; 0.25 length of upper glume. Lower glume surface pubescent. Lower glume apex acute. Upper glume ovate; 0.5 length of spikelet; coriaceous; without keels. Upper glume surface pubescent. Upper glume apex acute.

FLORETS Fertile lemma ovate; 13–16 mm long; coriaceous; without keel; 9–13 -veined. Lemma surface pubescent. Lemma apex acute. Palea 1 length of lemma. Palea keels winged; conspicuously winged. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 3; veined. Anthers 6. Stigmas 3.

FRUIT Caryopsis with adherent pericarp.

Habitat Type ²

Evergreen forest

Fuentes y créditos

1. (c) consci2014, todos los derechos reservados
2. (c) consci2014, algunos derechos reservados (CC BY-SA)

Más información

• NaturaLista página del taxón
• Biodiversity Heritage Library
• BOLD Systems BIN search
• eFloras.org
• Global Biodiversity Information Facility (GBIF)
• HOSTS - a Database of the World's Lepidopteran Hostplants
• IPNI (with links to POWO, WFO, and BHL)
• NatureServe Explorer 2.0
• SEINet Symbiota portals
• Tropicos
• World Flora Online

Range Map

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