Guihaia grossifibrosa (Gagnep.) J.Dransf., S.K.Lee & F.N.Wei, Principes 29: 12 (1985)

Primary tabs

https://media.e-taxonomy.eu/palmae/photos/palm_tc_93399_1.jpg

Content

Distribution

Map uses TDWG level 3 distributions (https://github.com/tdwg/wgsrpd)
China Southeast present (World Checklist of Arecaceae)A
Vietnam present (World Checklist of Arecaceae)A

Description

  • Clustering fan palm to ca. 1.8 m tall; stem erect or decumbent, ca. 1 m tall, 23 cm diam. Leaves several in crown; sheath tubular, prolonged into a triangular tongue-like lobe to 10 cm opposite the petiole, distintegrating into a lattice of broad flat fibers but the margins remaining entire; petiole usually 40-50 cm long, the longest up to 1.8 m, ca. 3-4 mm wide, ± hemispherical in cross-section, unarmed, bearing scattered caducous scales; adaxial hastula rounded, ca. 6 mm x 6 mm, fringed with caducous hairs; lamina to ca. 35 cm diam. at the mid-line, divided to ca. 'Ys or almost to the insertion into ca. 10-21 single-fold (rarely two-fold) reduplicate segments up to ca. 15 mm wide, the outermost segments very narrow, the segment tips very briefly bifid, adaxial surface glabrous, abaxial surface slightly paler, with very sparse dot-like scales; transverse veinlets short, conspicuous. Inflorescences 80 cm long, with 25 partial inflorescences branching to the 4th order; peduncle to ca. 40 cm long bearing a single peduncular bract; rachis shorter than the peduncle; rachillae to 10 cm x 1 mm or less. Staminate flower ca. 2.2 mm long; sepals ca. 0.8 x 0.8 mm, apex mucronate; corolla ca. 2 mm long, the lobes ca. 1.5 mm wide, with appendage on adaxial surface; anthers ca. 0.3 mm diam. Pistillate flower ca. 2.2 x 1.5 mm; sepals ca. 1 x 1 mm ovate-orbicular, glabrous; corolla ca. 2 mm long, the lobes ca. 1.5 mm wide, with appendage on adaxial surface; staminodes minute, the empty anthers ca. 0.3 mm long; carpels ca. 0.6 x 0.4 mm. Mature fruit ± ellipsoidal, ca. 6-8 x 4-5 mm; epicarp blueblack; seed ± ellipsoidal ca. 5 x 2.5 mm. (Dransfield, J. 1985: Guihaia, a New Coryphoid Genus from China and Vietnam)B

Materials Examined

  • VIETNAM, Vinh Province, massif de Lin Ca, 27. 7. 1929, Poilane 16383 (holotype P). CHINA. Guangxi, Gou Chang, Feng Wang Shan, 20. 6. 1955, Guangxi Expedition 493 (PE); Daxin, 13. 8. 1958, Zhang Zongxiang Wang Shan-ling 3952, (fr., IBK); Debao, 27. 5. 1983, Wei Fa-nan 1562 (fl. ♀, IBK), 1563 (fl. ♂, IBK). Guangdong, Yangchun, 3. 5. 1957, S. China Bot. Inst. 03373 (IBSC). (Dransfield, J. 1985: Guihaia, a New Coryphoid Genus from China and Vietnam)B

Bibliography

    A. World Checklist of Arecaceae
    B. Dransfield, J. 1985: Guihaia, a New Coryphoid Genus from China and Vietnam