Interesting Facts
Description
Family Podocarpaceae
Trees
or shrubs
evergreen
, dioecious or rarely monoecious. Leaves decussate, subopposite, or spirally arranged
; blade
scalelike, subulate
, or linear
to elliptic
, stomatal
lines
abaxial
or present on all surfaces. Pollen cones terminal
, solitary or clustered in leaf axils
, or borne in spikelike complexes; individual cones pedunculate
or sessile; microsporophylls
numerous
, spirally arranged, with distinct
adaxial
and abaxial surfaces; microsporangia 2; pollen 2(or 3) -saccate in Chinese species, (rarely nonsaccate) . Seed-bearing structures terminal or axillary
, solitary, occasionally spikelike, comprising few to several spirally arranged bracts; all or only apical bracts fertile
, smooth
or warty; basal bracts sometimes fused and succulent (together with peduncle) to form a "receptacle," or obsolete
; ovule (inverted
) or inclined
in Chinese species. Seed drupelike or nutlike, wholly or (in Dacrydium) partly enveloped in a sometimes colored
and succulent epimatium derived from fertile ovulate scale. Cotyledons 2.
Eighteen genera and ca.
180 species: tropical
, subtropical
, and S temperate
zones, mainly in S hemisphere but extending to montane
tropical Africa, Central America, and Japan; four genera and 12 species (three endemic) in China.[1]
Genus Nageia
Trees
evergreen
, dioecious or rarely monoecious; crown columnar
. Leaves spirally arranged
or in decussate, opposite pairs on leading shoots
, opposite or subopposite on lateral
shoots, ± monomorphic
, adult
leaves similar to juvenile leaves but often larger or wider (although juvenile leaves larger in Nageia wallichiana), more than 5 mm; petiole
twisted through 90° ; blade
broadly ovate-elliptic to oblong-lanceolate, without obvious midvein
but with many, slender, parallel, longitudinal
veins converging toward base
and apex, stomatal
lines
abaxial
or rarely on all surfaces. Pollen cones axillary
, solitary or clustered in small, spikelike groups of 3-6, borne on naked peduncles, ovoid-cylindric, with basal sterile
scales
; pollen 2-saccate. Seed-bearing structures terminal
on short, scaly
, axillary branchlets, solitary or occasionally paired
; bracts usually obsolete
, scarcely thicker than peduncle, rarely succulent and thicker than peduncle; ovule inverted
. Epimatium wholly enveloping seed, leathery, with bluish black bloom
when ripe
. Seed drupelike, globose
.
Five to seven species: Bangladesh, Cambodia, China, India, Indonesia, Japan (including Ryukyu Islands), Laos, Malaysia, Myanmar, Philippines, Thailand, Vietnam; three species in China.
The leaves of Nageia strongly differ from those of Podocarpus in their numerous
, parallel veins and absence of a midvein, and are superficially much more similar to those of Agathis (Araucariaceae). The Chinese species of Nageia were treated in FRPS under Podocarpus. D. Z. Fu (Acta Phytotax. Sin. 30: 515-528. 1991) placed the genus in its own family
, Nageiaceae, but this view
has since been refuted by several workers using different lines of evidence.[2]
Habitat
Biome: Terrestrial [3].
Taxonomy
- Domain:
Eukaryota
(
)
- Whittaker & Margulis,1978
- eukaryotes
- Kingdom:
Plantae
()
- Haeckel, 1866
- Plants
- Subkingdom:
Viridaeplantae
()
- Cavalier-Smith, 1981
- Phylum:
Tracheophyta
()
- Sinnott, 1935 ex Cavalier-Smith, 1998
- Vascular Plants
- Subphylum:
Euphyllophytina
()
- Infraphylum:
Radiatopses
()
- Kenrick & Crane, 1997
- Class:
Coniferopsida
()
- Burnett
- Order:
Coniferales
()
- Family:
Podocarpaceae
()
- Endlicher, 1847, nom. cons.
- Podocarp Family
- Genus:
Nageia
()
- J. Gaertner, 1788
- Specific epithet:
formosensis
- (Dummer) C.N.Page
- Botanical name: - Nageia formosensis (Dummer) C.N.Page
- Specific epithet:
formosensis
- (Dummer) C.N.Page
- Genus:
Nageia
(
- Family:
Podocarpaceae
(
- Order:
Coniferales
(
- Class:
Coniferopsida
(
- Infraphylum:
Radiatopses
(
- Subphylum:
Euphyllophytina
(
- Phylum:
Tracheophyta
(
- Subkingdom:
Viridaeplantae
(
- Kingdom:
Plantae
(
Notes
Basionym
: Podocarpaceae Podocarpus formosensis
Basionym author: (D?mmer)
Similar Species
Members of the genus Nageia
ZipcodeZoo has pages for 2 species, subspecies, varieties, forms, and cultivars in this genus:
N. nagi (Broadleaf Podocarpus) · N. wallichiana (Nageia)
More Info
- Search for Pictures: images.google.com
- Search for Scholarly Articles: Google Scholar
- Search using Scientific Name and Vernacular Names: All the Web | AltaVista Canada | AltaVista | Excite | Google | HotBot | Lycos
- Search using Specialized Databases: GenBank | Medline | Scirus | CISTI/CAL | Agricola Periodicals | Agricola Books
Further Reading
- 1997 IUCN red list of threatened plants Cambridge: IUCN, World Conservation Union, 1998 url p. 28.
- Cheng Wan-chün, Fu Li-kuo & Chao Chi-son. 1978. Podocarpaceae. In: Cheng Wan-chün & Fu Li-kuo, eds., Fl. Reipubl. Popularis Sin. 7: 398-422.
- Cheng Wan-chün, Fu Li-kuo & Chao Chi-son. 1978. Podocarpaceae. In: Cheng Wan-chün & Fu Li-kuo, eds., Fl. Reipubl. Popularis Sin. 7: 398-422.
Notes
Contributors
- Brands, S.J. (comp.) 1989-present. The Taxonomicon. Universal Taxonomic Services, Zwaag, The Netherlands. Accessed January 22, 2012.
- Conifer Specialist Group 2000. Nageia formosensis. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloadedon 02February2012.
- IUCN 2012. IUCN Red List of Threatened Species. Version 2011.2. . Downloaded on January 28, 2012.
Identifiers
- Biodiversity Heritage Library NamebankID: 7149539
- IUCN ID: 225530
- Zipcode Zoo Species Identifier: 3963801
Footnotes
- Liguo Fu, Yong Li & Robert R. Mill "Podocarpaceae". in Flora of China Vol. 4 Page 78. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
- "Nageia". in Flora of China Vol. 4 Page 79. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
- Conifer Specialist Group 2000. Nageia formosensis. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 02 February 2012. ... [back]
