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FOC | Family List | FOC Vol. 4 | Chloranthaceae

2. Chloranthus Swartz, Philos. Trans. 77: 359. 1787.

金粟兰属 jin su lan shu

Chloranthus japonicus
Image

Credit: Tatyana Shulkina

Nigrina Thunberg; Tricercandra A. Gray.

Subshrubs or perennial herbs. Leaves opposite or whorled, serrate; stipules tiny; petioles connected by a transverse ridge on stem. Inflorescences in spikes or branched, arranged in panicles, terminal or axillary. Flowers small, bisexual; perianth absent. Stamens usually 3, rarely 1, on 1 side of apical part of ovary; basal part of connective confluent, or free and connected or overlapped at base, ovoid or lanceolate, sometimes elongated to linear; anthers 1- or 2-loculed; if stamens 3, central anther 2-loculed or occasionally absent, lateral anthers 1-loculed, if stamen 1, anther 2-loculed. Ovary 1-loculed; ovule 1, pendulous, orthotropous; style usually absent, rarely present; stigma truncate or parted. Drupes globose, obovoid, or pyriform.

About 17 species: temperate to tropical Asia; 13 species (nine endemic) in China.

Further study is required on Chloranthus pernyanus Solms in A. de Candolle (Prodr. 16(1): 474. 1868), described from China but not treated here.


1 Subshrubs; stems branched; leaves usually in many pairs, not clustered at stem apex; connectives confluent and ovate, 3- or 5-lobed.   (2)
+ Perennial herbs; stems usually not branched; leaves usually 4 (rarely 6-10), clustered near stem apex, often false-whorled, with nodes toward base of stem with scalelike leaves only; connectives linear to oblong-lanceolate or very reduced.   (3)
       
2 (1) Flowers yellowish green; leaves 5-11 × 2.5-5.5 cm, apex acute or obtuse, margin crenate-serrate; central connective 3-toothed   1 Chloranthus spicatus
+ Flowers white; leaves 10-20 × 4-8 cm, apex gradually narrowed to caudate, margin glandular serrate; central lobe of connective entire   2 Chloranthus erectus
       
3 (1) Style conspicuous   3 Chloranthus oldhamii
+ Style absent.   (4)
       
4 (3) Leaves sessile   13 Chloranthus sessilifolius
+ Leaves petiolate.   (5)
       
5 (4) Connectives conspicuous, linear, more than 5 × as long as thecae.   (6)
+ Connectives short, 1-3 × as long as thecae.   (9)
       
6 (5) Leaves 8-10, lanceolate to narrowly elliptic, apex acuminate   4 Chloranthus angustifolius
+ Leaves usually 4, broadly elliptic or obovate, apex acute or acuminate.   (7)
       
7 (6) Central stamen without anther; leaf margin sharply serrate   5 Chloranthus japonicus
+ Central stamen 2-loculed; leaf margin serrate or crenate.   (8)
       
8 (7) Connective 1-1.9 cm; bracts 2- or 3-toothed; spike 1   6 Chloranthus fortunei
+ Connective less than 1 cm; bracts entire; spikes 1-5   7 Chloranthus holostegius
       
9 (5) Leaves pubescent along veins abaxially.   (10)
+ Leaves glabrous abaxially.   (12)
       
10 (9) Spikes many (sometimes 1), axillary and terminal; stamens 1-3, connectives small, ca. as long as thecae or slightly longer   11 Chloranthus multistachys
+ Spike 1, terminal, dichotomously or racemosely branched; stamens 3, connectives 2-4 × as long as thecae.   (11)
       
11 (10) Leaves broadly elliptic, ovate-elliptic, or obovate, serrate; peduncle 10-16 cm; central connective ca. 3 mm; thecae at base of connectives   12 Chloranthus henryi
+ Leaves suborbicular or broadly elliptic, dully serrate; peduncles 1.2-2.3 cm; central connective ca. 2 mm; thecae at middle of connectives   10 Chloranthus serratus
       
12 (9) Stamen 1, connective very reduced, not projecting beyond thecae   8 Chloranthus anhuiensis
+ Stamens 3, connective longer than thecae.   (13)
       
13 (12) Pistil with a gynophore 4-7 mm   9 Chloranthus tianmushanensis
+ Pistil without a gynophore.   (14)
       
14 (13) Leaves obovate or suborbicular, coarsely crenate; 3 connectives obliquely ascending, central connective erect, longer than lateral connectives; thecae at base of connectives   12 Chloranthus henryi
+ Leaves elliptic, obovate, or ovate-lanceolate, sharply and densely serrate; 3 connectives connivent, central connective incurved, nearly as long as lateral connectives; thecae at middle or apical part of connectives   10 Chloranthus serratus

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