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This species is accepted, and its native range is Bolivia.
A specimen from Kew's Herbarium

[KBu]

Goyder, D. (2004). An Amplified Concept of Philibertia Kunth (Apocynaceae: Asclepiadoideae), with a Synopsis of the Genus. Kew Bulletin, 59(3), 415-451. doi:10.2307/4110951

Distribution
Apparently endemic to the departamento of Tarija in southern Bolivia
Ecology
Philibertia tactila was found on steep, grass-covered sandstone cliffs in two localities at altitudes of 1850 m and 2350 m.
Morphology General Habit
Perennial herb with stems twining to 3 m; latex white
Morphology General Indumentum
Whole plant densely tomentose to lanate
Morphology Leaves
Leaves with petiole 1 - 2.5 cm long, tomentose; lamina 4 - 7 x 1.5 - 3 cm, ovate- lanceolate with an acute or shortly apiculate apex and a strongly cordate base, tomentose with golden hairs adaxially, white-lanate abaxially
Morphology Reproductive morphology Flowers
Flower buds with conspicuous arrow-head projections from the corolla lobe sinuses
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anther wings ± triangular, margins straight, 3 mm long
Morphology Reproductive morphology Flowers Calyx
Calyx lobes c. 5 mm long, linear, densely tomentose
Morphology Reproductive morphology Flowers Corolla
Corolla bi- campanulate, the lower 2 mm of the tube constricted around the base of the gynostegium, then opening out into a broadly campanulate tube c. 8 - 10 mm across and 4 mm deep; free portion of lobes c. 7 mm long and 10 mm wide, recurved at tip; basal constrictions and base of upper tube pubescent, cream or white with an interrupted orange circular marking towards its outer limit, lobes and upper portion of tube white or cream with radiating red markings
Morphology Reproductive morphology Flowers Corona
Staminal corona lobes absent Basal coronal ring absent
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigma head domed, extending shortly beyond the anthers; very weakly bilobed - paired stigma head appendages absent
Morphology Reproductive morphology Flowers Gynostegium
Gynostegium 5 - 6 mm long, tip ± level with mouth of upper tube
Morphology Reproductive morphology Flowers Pollinarium
Corpusculum c. 1.2 mm long, ± boat-shaped, keeled and with a flattened outer face, brown; translator arms c. 1 mm long, angled downwards and back from the plane of the corpusculum, flattened, and with an Oxypetalum-like tooth distally; pollinia c. 1 x 0.3 mm, flattened, elliptic-oblong
Morphology Reproductive morphology Fruits
Follicles solitary, 5.5 - 6 x 2.5 cm, ± ovoid basally then tapering gradually into a clavate, broadly truncate apex, weakly ridged longitudinally and covered entirely in tomentose indumentum
Morphology Reproductive morphology Inflorescences
Inflorescences extra- axillary, ± umbelliform but revealing spirally distributed scars in fruit, 1 - 6 flowered; peduncle 5 - 10 mm long, tomentose; bracts c. 4 mm long, filiform, almost completely obscured by the tomentose indumentum; pedicels c. 5 - 8 mm long, tomentose
Morphology Reproductive morphology Seeds
Seeds c. 5 x 2 mm, somewhat angular, irregularly verrucose; coma of silky hairs c. 2.5 cm long.
Note
This species is closest florally to Philibertia amblystigma, P. multiflora and P. boliviana - the constrictions in the corolla with associated indumentum compensate functionally for the absence of a corona - but the form of the stigma head and translator arms suggest a link to the P. longistyla group. Some collections of P. amblystigma have similar but less distinct reddish markings in the corolla tube, but the flowers of that species are considerably smaller than in P. tactila.
Type
Bolivia, dept. Tarija, prov. O'Connor, river gorge just W of Narvaez and San Jose on road from Tarija to Entre Rios, 22 Jan. 2000, Wood & Goyder 15853 (K holotypus; LPB isotypus).

Native to:

Bolivia

Philibertia tactila Goyder appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Jan 1, 2004 Wood, J. R. I. [15853], Bolivia K000196720 holotype
Wood, J.R.I. [15853], Bolivia 73185.000 holotype

First published in Kew Bull. 59: 439 (2004)

Accepted by

  • Jørgensen, P.M., Nee, M.H. & Beck., S.G. (eds.) (2013). Catálogo de las plantas vasculares de Bolivia Monographs in Systematic Botany from the Missouri Botanical Garden 127: 1-1741. Missouri Botanical Garden.

Literature

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Kew Backbone Distributions

  • Jørgensen, P.M., Nee, M.H. & Beck., S.G. (eds.) (2013). Catálogo de las plantas vasculares de Bolivia Monographs in Systematic Botany from the Missouri Botanical Garden 127: 1-1741. Missouri Botanical Garden.

Herbarium Catalogue Specimens
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/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 Bulletin
Kew Bulletin
http://creativecommons.org/licenses/by-nc-sa/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