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FOC | Family List | FOC Vol. 11 | Burseraceae

3. Canarium Linnaeus, Amoen. Acad. 4: 121. 1759.

橄榄属 gan lan shu

Trees evergreen. Branchlet pith usually with vascular strands. Leaves alternate, odd-pinnate, stipulate or exstipulate. Flowers in terminal or axillary panicles, unisexual. Calyx cupular or campanulate, 3-lobed or -fid, valvate. Petals 3, imbricate below or valvate, usually exceeding calyx. Stamens 6, free to connate, inserted on margin or outside of disk. Ovary 2- or 3-celled; ovules 2 in each cell; style short to long; stigma capitate. Drupe usually ellipsoid, ± distinctly trigonous, with a 1-3-celled, 1-3-seeded pyrene; cotyledons often partite, contortuplicate.

About 75 species: mainly in tropical Africa, Asia to NE Oceania and Pacific islands; seven species in China.


1 Plants exstipulate or stipules very early deciduous   (2)
+ Plants stipulate, stipules usually early deciduous but leaving a scar   (4)
       
2 (1) Center of branchlet pith without vascular strands; cross section of drupe acutely triangular.   4 C. parvum
+ Center of branchlet pith with scattered vascular strands; cross section of drupe not acutely triangular   (3)
       
3 (2) Leaflet blades with entire margin; cross section of drupe nearly rounded.   2 C. pimela
+ Leaflet blades with somewhat sinuate or toothed margin; cross section of drupe rounded or rounded triangular.   7 C. strictum
       
4 (1) Leaflets 6-8(-10) pairs; cross section of drupe acutely triangular, apex of drupe sometimes truncate.   6 C. bengalense
+ Leaflets usually less than 6 pairs; cross section of drupe not acutely triangular, apex of drupe acuminate or obtuse   (5)
       
5 (4) Leaflet blades with shallowly serrate or sinuate margin, both surfaces ± pubescent.   5 C. subulatum
+ Leaflet blades with entire margin, abaxially minutely verrucose   (6)
       
6 (5) Leaflet blades 13-20 × 6-8 cm; inflorescences extra-axillary (2-3 cm from axil), infructescences ca. 30 cm.   3 C. tonkinense
+ Leaflet blades 6-14 × 2-5.5 cm; inflorescences axillary, infructescences 1.5-15 cm.   1 C. album

Lower Taxa


 

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