Adansonia, sér. 2 , 13: 223 (1973)
Grierson & Long, Flora of Bhutan 1 (2): 39 (1984);
Kochummen, Tree Flora of Malesia 4: 123 (1989);
Rohwer, Families and Genera of Vascular Plants 2: 389 (1993) ;
Van der Werff, Blumea 46: 135 (2001).
Litsea section Octolitsea, H.Liu, Bulletin de la Société botanique de France 80: 568 (1933).
A revision of Cinnadenia Kosterm. (Lauraceae)
De Kok, Rogier P. J.
Sengun, Seda
Adansonia
2020
2020-03-09
42
4
105
112
3PZL
Kosterm.
Kosterm.
[377,608,281,308]
Magnoliopsida
Lauraceae
Cinnadenia
Plantae
Laurales
4
107
Tracheophyta
genus
Adansonia, sér. 2, 13: 223 (1973); Grierson & Long, Flora of Bhutan1 (2): 39 (1984); Kochummen, Tree Flora of Malesia4: 123 (1989); Rohwer, Families and Genera of Vascular Plants2: 389 (1993); Van der Werff, Blumea46: 135 (2001).
—Type species: Dodecadenia paniculataHook.f. (1886) (synonym of Cinnadenia paniculata(Hook.f.) Kosterm.)
Litseasection Octolitsea, H.Liu, Bulletin de la Société botanique de France80: 568 (1933).
—Type species: Litsea liyuyingiiH.Liu(synonym of Cinnadenia liyuyingii(H.Liu) de Kok & Sengun, comb. nov.).
DISTRIBUTION. — Three species, one in North India and Bhutan, one in South China and North Vietnam and one in Peninsular Malaysia (see Fig. 1).
DESCRIPTION Trees 3-30 m tall. Terminal leaf buds not perulate. Leaves alternate, venation pinnate, domatia absent. Inflorescence umbellate or a panicle or with 3 or 4-5 terminal flowers, axillary, rarely terminal, involucral bracts absent or present. Flowers unisexual, dimerous or trimerous; perianth lobes 4 or 6, equal, persistent, partly truncate or deciduous in fruit; tube short, funnel-shaped, enlarged and indurate in fruit. Male flowers, stamens 8-12, 18-26 or 32, 3 rdrow with a pair of stalked or sessile glands on the filaments; anthers 4-celled, all introrse. Female flowers, ovary sessile, at the bottom of FIG. 1. — Distribution of the species of CinnadeniaKosterm.:, Cinnadenia paniculata(Hook. f.) Kosterm.;, Cinnadenia liyuyingii(H.Liu) de Kok & Sengun, comb. nov.;, Cinnadenia malayanaKosterm. perianth tube; style slender; stigma discoid or obscurely 3-lobed. Fruit a drupe, seated on a cup-shaped perianth tube (cupule), margin entire.
KEY TO THE SPECIES OF CINNADENIAKOSTERM.
1. Leaves lanceolate; apex acuminate; upper surface smooth (hand lens), secondary venation hardly visible. Inflorescence with an apical whorl of 2-3 flowers; flowers with 4 perianth lobes .............. 2. C. malayanaKosterm. — Leaves elliptic to lanceolate, sub-obovate or narrowly ovate; apex acute to indistinctly acuminate to obtuse; upper surface pitted (hand lens), secondary venation clearly visible. Inflorescence with apical whorl of 4-5 flowers or umbellate; flowers with 6 perianth lobes ................................................................................................. 2 2. Twigs sparsely hairy to glabrous when young; terminal leaf bud 6.4-7.4 mmlong, apex acuminate, glabrous to velutinous; flowers with 26 or 32 stamens .................. 1. C. liyuyingii(H.Liu) de Kok & Sengun, comb. nov. —Twigs velutinous when young, glabrescent; terminal leaf bud 2.3-2.5 mmlong, apex acute to indistinctly acuminate, velutinous; flowers with 9-12 stamens ............................................ 3. C. paniculata(Hook. f.) Kosterm.