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Project Name Data (Last Modified On 1/11/2013)

Flora Data (Last Modified On 1/11/2013)
Genus DENDROPANAX Dec. & Planch.
PlaceOfPublication Rev. Hortic. ser. IV. 3:107. 1854.
Synonym Gilibertia R. & P. Fl. Per. Prodr. 50. 1794, not J. F. Gmel. Wangenheimia Dietr. in Lex. 10:5 3 6. 1810, not Moench. Ginannia Dietr. in Lex. Nachtr. 3:483. 1817, not Scop. Gilibertia subgen. Melopanax Marchal, in Bull. Acad. Belg. II. 47:77. 1879.
Description Shrubs or trees, our species generally glabrous throughout. Leaves simple, the juvenile blades occasionally lobed, the mature blades usually entire; apparently estipulate. Inflorescences with 2-20 umbels (rarely heads) racemosely or um- bellately arranged in a single terminal or axillary umbel, the floriferous peduncles subtended by small bracts, sometimes bracteate and articulate above the base, swollen distally into an often carnose receptacle; pedicels continuous with the calyx, bracteate at the base. Flowers bisexual or polygamo-monoecious, 5- to 9- merous; calyx obconic or cupuliform, the limb short, usually denticulate; petals free, usually carnose and greenish-white, subacute and slightly cucullate at the apex, valvate; stamens twice as many as the petals, inflexed in bud, the anthers with loosely coherent thecae; disc short-conic, confluent with the styles; style connate into a short column or essentially free, the ovary thick-walled, the locules and ovules 5-9. Fruit subglobose or ellipsoid, sulcate, surmounted by the persistent short calyx-limbs and stylar column or styles, the seeds usually as many as the locules.
Habit Shrub tree
Key a. Umbels 3-20 per inflorescence, racemosely or umbellately arranged. b. Mature leaf-blades entire, undulate, remotely crenate-denticulate or serrate; primary peduncle plus rhachis 1-10 cm. long; calyx not broader than long. c. Inflorescence usually terminal; peduncles striate or smooth, without horizontal fissures, not (or rarely) jointed, the bracts (if present) rarely connate. d. Leaf-blades entire, undulate or remotely crenate, obtusely acuminate or cuspidate at the apex (the acumen rarely slender and then scarcely exceeding 15 mm. in length). . 1. D. ARBOREUS dd. Leaf-blades remotely serrate with linear teeth 1-4 mm. long, slenderly acuminate at the apex (the acumen 15-25 mm. long). 2. D. STENODONTUS cc. Inflorescence terminal or lateral; peduncles rugose, often marked with short transverse fissures, uniformly articulate, the bracts usually connate into a small coriaceous cupule. e. Flowers pedicellate; leaf-blades entire or undulate ..----------------------- 3. D. GONATOPODUS ee. Flowers sessile; leaf-blades undulate to serrate .---------------------------- 4. D. SESSILIFLORUS bb. Mature leaf-blades entire or deeply 3-lobed, irregularly sinuate- serrate; primary peduncle plus rhachis 0.5-1.3 cm. long; calyx somewhat broader than long. f. Flowers 6-15 per umbel; primary peduncle plus rhachis 0.5-1.3 cm. long, the floriferous peduncles about 6 per inflorescence; pedicels glabrous. .------------------------------------- 5. D. PRAESTANS ff. Flowers about 50 per umbel; primary peduncle plus rhachis less than 1 cm. long, the floriferous peduncles about 12 per inflores- cence; pedicels ferrugineous-puberulent .--------------------------- 6. D. ALBERTI-SMITHII aa. Umbel solitary (rarely with one or two smaller inconspicuous secondary umbels). g. Floriferous peduncle 0.5-2.5 cm. long; pedicel 3-15 mm. long ........... 7. D. QUERCETI gg. Floriferous peduncle at least 3 cm. long; pedicel 25-35 mm. long. 8. D. DARIENENSIS
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