| Literature DB >> 24399902 |
Stefanie M Ickert-Bond1, Jun Wen2.
Abstract
A taxonomic synopsis of the Altingiaceae is presented, including the taxonomic enumeration and distribution of 15 recognized species based on studies of 1,500 specimens from 24 herbaria throughout the distributional range of the taxa. Previous phylogenetic analyses based on several molecular markers have shown that Altingia and Semiliquidambar are nested within Liquidambar. All Altingia and Semiliquidambar species are now formally transferred to Liquidambar, which has the nomenclatural priority. The following nine new combinations are herein made: Liquidambar cambodiana(Lecomte) Ickert-Bond & J. Wen, Liquidambar caudata (H. T. Chang) Ickert-Bond & J. Wen, Liquidambar chingii (Metcalf) Ickert-Bond & J. Wen, Liquidambar gracilipes (Hemsl.) Ickert-Bond & J. Wen, Liquidambar multinervis(Cheng) Ickert-Bond & J. Wen, Liquidambar obovata (Merrill & Chun) Ickert-Bond & J. Wen, Liquidambar poilanei (Tardieu) Ickert-Bond & J. Wen, Liquidambar siamensis (Craib) Ickert-Bond & J. Wen, and Liquidambar yunnanensis (Rehder & Wilson) Ickert-Bond & J. Wen.Entities:
Keywords: Altingia; Altingiaceae; Liquidambar; Semiliquidambar; taxonomic synopsis
Year: 2013 PMID: 24399902 PMCID: PMC3881344 DOI: 10.3897/phytokeys.31.6251
Source DB: PubMed Journal: PhytoKeys ISSN: 1314-2003 Impact factor: 1.635
Figure 2.Morphological variation in Altingiaceae. A with obconical flattened infrutescences and short styles. Leaves are simple, entire, choriaceous, and show a characteristic drip tip at the apex B also shows obconical flattened infructescences with simple leaves that have a serrate margin and lack of a drip tip C showing variation in leaf morphology from palmately three-lobed leaves at left, to two-lobed leaves and simple leaves on the same branch. Infructescences are globose with long styles D showing palmately five-lobed, chartaceous leaves, and globose infructescences with long styles.
Figure 3.Pollen diversity in Altingiaceae. A–D E–H I–L A Pentaporate, spheroidal pollen grain B Details of pore showing the characteristic disintegration of the tectum C Details of the tectal surface displaying scabrae and irregularly-shaped perforations D Details of tectate-columellate exine, note columellae slightly thicker than those of comparable magnification in H and E Pentaporate, spheroidal pollen grain F Details of pore showing the characteristic disintegration of the tectum G Details of the tectal surface displaying scabrae and irregularly-shaped perforations H Details of tectate-columellate exine with thinner columellae than in D of I Pentaporate, spherical pollen grain J Details of circular pore showing eroded tectum in the pore proper K Details of tectal surface with irregularly-shaped perforations and scabrae L Details of the tectate-columellate exine with thin columellae as compared to in D. Scale bars: A, E, I = 2 µm, scale bars: B, F, G, J = 1 µm, scale bars: C, H, K, L= 500 nm, scale bar: D= 200 nm.
| 1 | Leaves consistently palmately-lobed | |
| 2 | Leaves of mature trees with three lobes, sometimes 5 in juvenile condition | |
| 3 | Infructescence subglobose, with stout styles 4–6 mm long, curved; seeds with circular flange | 1. |
| 3’ | Infructescences globose, with fine styles 7–10 mm long, coiled; seeds with a terminal wing | 7. |
| 2’ | Leaves of mature trees with more than 3, mostly 5 lobes, sometimes more than 5 lobes present | |
| 4 | Infructescences with narrow style bases (up to 18 mm wide); areas between fruits appearing as a smooth rim | 11. |
| 4’ | Infrutescences with broad style bases (up to 30 mm wide); areas between adjacent fruits appearing braided | 14. |
| 1’ | Leaves variable, mostly unlobed or varying to lobed within a single branch | |
| 5 | Leaves tri-nerved, mostly palmately-lobed, seldom unlobed | 5. |
| 5’ | Leaves penninerved, strictly unlobed | |
| 6 | Infructescences obconical with 5-8 fruits, base of the infructrescence with a prominent “skirt” | |
| 7 | Leaves coriaceous, 2–3 cm wide, glossy above; margin entire, less often serrate; fruits up to 2 cm broad | 8. |
| 7’ | Leaves chartaceous, 3–4 cm wide, dull above; margin serrate; fruits broader than 3 cm | 13. |
| 6’ | Infructescences mostly subglobose, with 10–30 fruits, base of the infructescence lacking a “skirt” | |
| 8 | Leaves glossy above, margins distinctly revolute upon drying; endemic to Cambodia | 2. |
| 8’ | Leaves dull above, margins not curled; of broader distribution in southeast Asia | |
| 9 | Petioles 0.5–1.2 cm long | |
| 10 | Leaves elliptical | 4. |
| 10’ | Leaves obovate | |
| 11 | Leaf base acute, apex obtuse, lateral veins 8–10, conspicuous beneath | 10. |
| 11’ | Leaf base subcordate to rounded, base acute, lateral veins 5–6, not prominent beneath | 12. |
| 9’ | Petioles 2–5 cm long | |
| 12 | Leaves chartaceous | 6. |
| 12’ | Leaves coriaceous | |
| 13 | Leaves 4–7 cm long, apex caudate, petioles slender, 1–1.5 mm thick; infructescences 1–2 cm broad | 3. |
| 13’ | Leaves 8–13 cm long, apex acute, petioles stout, 2–3 mm thick; infructescences 2–3 cm broad | 15. |