Sauromatum hirsutum (S.Y.Hu) Cusimano & Hett.

First published in Taxon 59: 445 (2010)
This species is accepted
The native range of this species is China (S. Yunnan) to N. Indo-China. It is a tuberous geophyte and grows primarily in the subtropical biome.

Descriptions

CATE Araceae, 17 Dec 2011. araceae.e-monocot.org

General Description
Herbs, cormous, with single-celled hairs ca. 0.5mm. Underground part a depressed-globose tuber, 1.5–2.5cm in diam., producing numerous annual, subglobose, angulate offsets. Petiole 20–25cm; leaf blade pedately 5–7-foliolate; leaflets almost sessile; central leaflet elliptic, 7–31 × 2.5–10cm, apex acuminate; lateral leaflets elliptic, oblique at base, outermost one ca. 2/3 length of central one. Inflorescence appearing alongside first developing leaf; peduncle very short, 1–1.5cm. Spathe hirsute outside, smooth inside; basal part convolute but lower ca. 1cm with fused margin, ca. 4 × 2cm, slightly constricted at apex; limb laterally incurved, lanceolate-ovate, 8–13 × 5–8cm. Spadix shorter than spathe; female zone broadly cylindric-conic, to 6.5 × 10mm; ovary subcylindric, 1-loculed, with 2 or 3 ovules; stigma white or ± cream-colored, disciform; sterile zone to 3.5 cm, proximal 0.5–1cm densely covered with staminodes, rest naked, grooved; proximal staminodes pale pinkish purple or dark brownish purple, clavate, to 7mm, apex obtuse; male zone 1–1.7 × ca. 0.8cm; appendix sessile or sub-sessile, brown or grayish brown, narrowly conic, to 10.5cm, to 6 mm in diam. at base, base truncate. Infructescence naked, globose, to 4cm in diam. Berries with distinct angulate distal part, ca. 1 × 0.5cm; style remnant sharply acute, ca. 1mm.
Habitat
Secondary evergreen forests, tea plantations.
Phenology
Fl. May, fr. Jul.
Vernacular
mao li tou jian
[CATE]

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: not threatened. Confidence: low confidence
[AERP]

CATE Araceae, 17 Dec 2011. araceae.e-monocot.org

Distribution

Endemic to Thailand. THAILAND. Chiengmai, Doi Sutep, dry everygreen forest, alt. 1130 m, 8 July 1958, Payap 3939 (holotype C!); without exact locality, 18 May 1987, comm. S Mayo as "Arisaema 1" (K! spirit material only).

General Description

Monoecious, seasonally dormant herb covered with single-celled hairs c. 0-5 mm long. Tuber subglobose, 1-5-2-5 cm in diameter. Cataphylls 4, the innermost one largest, c. 10 cm long. Foliage leaves normally 1-2; petiole 20-25 cm long, basal sheath 1-5 cm long, encircling peduncle; blade pedately 5-7-foliolate, probably expanding somewhat after flowering, leaflets almost sessile; terminal leaflet elliptic, caudate at the apex, 16 cm long, 6-2 cm wide at flowering, 16-31 x 9-10 cm when fruiting; lateral leaflets elliptic but oblique at base, outermost one c. 2/3 the length of the terminal one. Peduncle very short, 1-1-5 cm long. Spathe smooth inside, hirsute outside: tube 4 cm long, 2 cm in diam., slightly constricted at the mouth, the upper 3 cm with free margins, the basal 1 cm with fused margins; blade lanceolate-ovate, laterally incurved, c. 12 x 8 cm. Spadix: basal female part 6-5 mm long; intermediate sterile part 3-5 cm long, lower 1 cm densely covered with modified sterile flowers, upper 2-5 cm naked; male part 1-7 cm long; appendix subsessile, 10-5 cm long, 6 mm diam. at the base. Female flower a unilocular subcylindric pistil with disk-shaped stigma; ovules 2-3 per locule, locule filled with jelly-like material. Sterile flowers clavate, apically rounded, 7 mm long. Infructescence globose, immature fruit 1 cm long, 0-5 cm diam.; persistent style 1 mm long (Fig. IB).

[CATE]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0
  • CATE Araceae

    • Haigh, A., Clark, B., Reynolds, L., Mayo, S.J., Croat, T.B., Lay, L., Boyce, P.C., Mora, M., Bogner, J., Sellaro, M., Wong, S.Y., Kostelac, C., Grayum, M.H., Keating, R.C., Ruckert, G., Naylor, M.F. and Hay, A., CATE Araceae, 17 Dec 2011.
    • http://creativecommons.org/licenses/by-nc-sa/3.0
  • Herbarium Catalogue Specimens

    • 'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2025. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2025. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0