Lasia spinosa [(L.) Thwaites ]

Lasia spinosa (L.) Thwaites

Lasia spinosa

General description:

Evergreen herb to 1 m tall. Subterranean stem a rhizome, 1–2 cm diam. Cataphylls sheathing separately petiole and peduncle, 1–25 cm long; petiole to 60 cm long; leaf blade pedate; leaflets 5(–7), oblong-elliptic, 13–16 × up to 6 cm wide, margins entire, apex acuminate, ending in a short arista, ca 1 cm long; central leaflet with a petiolule to 6 cm long; lateral leaflets shortly petiolulate, external ones asymmetrical, green. Inflorescence overtopping the foliage; peduncle to 85 cm long, carmine; spathe tube slightly funnel-shaped, ca 6 × 2.5 cm near the mouth, light yellow-green; spathe mouth margins with broad auricles, 1.5–2.5 cm wide; spathe limb ovate, ca 11 × 4 cm, light green, tip acuminate, ending in a short thread; spadix appendix protruding from the tube, but shorter than the spathe, 6–8 cm long, thin, sessile, lower part conical, ca 5 mm wide, covered with many, green, flexuous bristles, 3–18 cm long, and with short purple bristles just above the fertile zone; fertile zone staminate or bisexual; staminate flowers 3–4-androus; anthers stalked; thecae dehiscent by an elongate pore; pistillate flowers, infructescence and fruits unknown.

General Description Reference:
Boyce, Peter Charles, Sookchaloem, D., Wilbert Leonard Anna Hetterscheid, Gusman, G, Niels Henning Gunther Jacobsen, Idei, T., Nguyen Van Du, 2012. Araceae
Distribution Reference:
Boyce, Peter Charles, Sookchaloem, D., Wilbert Leonard Anna Hetterscheid, Gusman, G, Niels Henning Gunther Jacobsen, Idei, T., Nguyen Van Du, 2012. Araceae
Habitat Reference:
Boyce, Peter Charles, Sookchaloem, D., Wilbert Leonard Anna Hetterscheid, Gusman, G, Niels Henning Gunther Jacobsen, Idei, T., Nguyen Van Du, 2012. Araceae
Distribution:

Widespread throughout tropical Asia from southern India and Sri Lanka eastwards as far as New Guinea and north to southern China. For discussion of typifications see Hay, Blumea 33: 427–469. 1988.

Habitat:

Open wet areas in deciduous and evergreen forest, along rivers and in ditches; frequently remaining after land clearance; on a variety of substrates but not recorded from limestone.

Uses:

The emerging leaves and inflorescences are used locally as a green vegetable (recorded by several collectors).

Uses Reference:
Boyce, Peter Charles, Sookchaloem, D., Wilbert Leonard Anna Hetterscheid, Gusman, G, Niels Henning Gunther Jacobsen, Idei, T., Nguyen Van Du, 2012. Araceae

Fri, 2014-06-20 09:40 -- Anna
Lasia spinosa (Araceae)

General description:

Herbs, 1–2m tall. Stem long creeping and stoloniferous, erect or ascending, ca. 2.5cm in diam., internodes with stout prickles. Petiole 32–125cm, laxly prickly, sometimes almost smooth; pulvinus 15–35mm, aculeate; leaf blade very variable, sagittate-hastate, 35–65 × 20–60cm, simple or divided; anterior lobe entire or pedate to near midrib, acuminate; posterior lobes strongly downwardly directed to subspreading, once or twice bifid with 3 or 4 narrow to rather long acute or acuminate lateral segments; primary lateral veins 2–4, strong, secondary lateral veins thinner, higher order veins very numerous, all venation flush above, abaxially with rather small, straight to slightly curved prickles. Peduncle to 47cm, laxly prickly. Spathe dull orange to black-red outside, dull yellow to rarely dull crimson inside, 18–35cm with caudate part to 28cm, proximally widened, very much shorter, 3–10cm wide. Stipe of spadix obscure; spadix cylindric, 3–5cm, in fruit elongated to 8cm. Tepals oblong, 1.5–3mm, apex triangular hooded, keeled. Filaments ca. 1.5 × 0.8mm; anthers ca. 0.8 × 0.8mm. Ovary ovoid, ca. 1.5mm high. Fruit obpyramidal, ca. 1cm wide, densely warty-aculeate, sides unarmed, when dry irregularly ribbed, apex truncate. Seed ovoid-cordate, 5–7mm.

General Description Reference:
Hen(g) Li, Guang Hua Zhu, Peter Charles Boyce, Jin Murata, Wilbert L.A. Hetterscheid, Josef Bogner, Niels Henning Gunther Jacobsen, 2010. Araceae in Flora of China @ efloras.org
This material was reprinted with permission from the Missouri Botanical Garden Press, St. Louis, and Science Press, Beijing.
Diagnostic description:

Stem with distinct armed internodes, usually stoloniferous; leaves entire to 1 x divided.

Diagnostic Description Reference:
Hay, Alastair, 1988. Cyrtosperma (Araceae) and its Old World allies. Blumea
Distribution Reference:
Hay, Alastair, 1988. Cyrtosperma (Araceae) and its Old World allies. Blumea
Habitat Reference:
Hen(g) Li, Guang Hua Zhu, Peter Charles Boyce, Jin Murata, Wilbert L.A. Hetterscheid, Josef Bogner, Niels Henning Gunther Jacobsen, 2010. Araceae in Flora of China @ efloras.org
This material was reprinted with permission from the Missouri Botanical Garden Press, St. Louis, and Science Press, Beijing.
Distribution:

From India to New Guinea.

Habitat:

Swamps, riverbanks, ditches, moist places in tropical and subtropical forests, sometimes cultivated along fish ponds and rice fields.

Uses:

The young leaves are used as a vegetable. The rhizomes are used medicinally for treating tuberculosis of lymph nodes, swollen lymph nodes, stomach aches, snake and insect bites, injuries, and rheumatism.

Uses Reference:
Hen(g) Li, Guang Hua Zhu, Peter Charles Boyce, Jin Murata, Wilbert L.A. Hetterscheid, Josef Bogner, Niels Henning Gunther Jacobsen, 2010. Araceae in Flora of China @ efloras.org
This material was reprinted with permission from the Missouri Botanical Garden Press, St. Louis, and Science Press, Beijing.
Misc
Phenology:

Fl. Jul–Sep.

Wed, 2013-06-12 12:26 -- Anna

CATE Araceae

Araceae

Lasia spinosa (L.) Thwaites

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Lasia spinosa

Lasia spinosa (Araceae)

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Araceae

Lasia spinosa (L.) Thwaites

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