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This genus is accepted, and its native range is E. Central & E. Tropical African Mountains.
Dendrosenecio erici-rosenii subsp. alticola

[FTEA]

Compositae, H. Beentje, C. Jeffrey & D.J.N. Hind. Flora of Tropical East Africa. 2005

Morphology General Habit
Perennial giant-rosette plants to 10 m tall with woody trunks; typically upright and polycarpic, with branching initiated below each terminal inflorescence, sometimes monocarpic or creeping; primary stem 2–12 cm wide, comprised mainly of pith, which provides internal water capacitance; secondary growth produces abundant white wood and a grey, furrowed bark
Morphology Reproductive morphology Seeds
Seedlings and young plants with leaves commonly constricted toward the base, forming a pseudo-petiole, particularly when growing in partial shade
Morphology Leaves
Developing leaves of mature plants revolutely folded, the upper lamina glabrescent; commonly bathed in mucilage, an ice-nucleating pectinaceous material that in some species is secreted among the leaf bases and may collect in the leaf-rosette Leaves alternate (although appearing whorled in densely packed leaf-rosettes), to 120 cm long and 35 cm wide, simple, in rosettes of 10–100, with developing leaves often reaching almost mature length in a massive ‘apical bud’ before unfurling to join the leaf-rosette; leaf base wide, sheathing, often with a dense cushion of white trichomes on the upper surface; leaf margin occasionally entire, but usually serrate or dentate, tipped with hydathodes; indumentum of lower lamina comprising multicellular, uniseriate trichomes, variable among species, but generally villose along the lower midvein
Morphology Reproductive morphology Inflorescences
Inflorescence to 2.5 m tall, erect, pyramidal-paniculate or cylindrical, densely pubescent to glabrescent; bracteate, with a range of transitional shapes from the mature vegetative leaves subtending the peduncle to the small bracts subtending each capitulum; capitula numerous, with biseriate involucral bracts; outer bracts 5–23, filiform, 5–18 mm long; inner bracts 10–25, narrow to broadly ovate, 11–16 x 2–6 mm, with apical papillae; receptacle nude
Ray
Ray florets absent or 6–20, yellow, female, with staminodes sometimes present, ray 2–23 x 2–5 mm; tube 4–8 mm long
Morphology Reproductive morphology Flowers Florets
Disc florets 30–380, yellow, hermaphrodite, 8–10 mm long; style with a continuous stigmatic surface; anthers non-auriculate, filament collars balusteriform Ray florets absent or 6–20, yellow, female, with staminodes sometimes present, ray 2–23 x 2–5 mm; tube 4–8 mm long
Disc
Disc florets 30–380, yellow, hermaphrodite, 8–10 mm long; style with a continuous stigmatic surface; anthers non-auriculate, filament collars balusteriform
Morphology Reproductive morphology Fruits
Achenes glabrous, 8–10-ribbed; pappus of many bristles.

Native to:

Kenya, Rwanda, Tanzania, Uganda, Zaïre

Dendrosenecio (Hauman ex Hedberg) B.Nord. appears in other Kew resources:

First published in Opera Bot. 44: 40 (1978)

Accepted by

  • Roskov Y. & al. (eds.) (2018). Species 2000 & ITIS Catalogue of Life Naturalis, Leiden, the Netherlands.

Literature

Flora of Tropical East Africa

  • A.V.P.: 226 (1957)
  • B. Nord. in Opera Bot. 44: 40 (1978)
  • C. Jeffrey in K.B. 41: 887 (1986)
  • E. B. Knox in Contr. Univ. Michigan Herb. 19: 243 (1993)
  • Mabb. in K.B. 28: 80 (1973)
  • in Rev. Zool. Bot. Afr. 28: 31 (1935)

Flora of Tropical East Africa
Flora of Tropical East Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0