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Published In: Tropical Woods 20: 24. 1929. (Trop. Woods) Name publication detail

Project Name Data (Last Modified On 10/6/2016)
Acceptance : Accepted
Note : Tribe Condamineeae
Project Data     (Last Modified On 3/24/2019)

Macbrideina includes one species of trees with robust leaves and inflorescences. The plants are distinctive in their rather well developed obovate leaves, well developed, caducous, interpetiolar stipules that are ligulate and held flattened and erect in bud, lax cymose inflorescences with well developed peduncles and axes; 5-merous flowers with dentate calyx limbs; well developed funnelform corollas with the lobes rounded and convolute in bud; and cylindrical loculidical capsules with numerous small angled seeds. The corollas are green or yellowish green with the lobes marked with deep or bright red. These flowers are generally similar in size and color to Condaminea, which is thought to sometimes be bat-pollinated.

Macbrideina is generally similar to several species of Rustia, but these have pellucid glands in the leaves and anthers that are poricidal (vs. opening by longitudinal slits in Dolichodelphys and most other Rubiaceae). Also similar are Condaminea, which is found in the same range but has persistent stipules that are divided in their interpetiolar portions to produce 2 intrapetiolar or 4 free segments, and Dolichodelphys, which has persistent triangular interpetiolar stipules that are fused around the stem at the base, white corollas with the lobes imbricate in bud, and septicidal capsules.

In a molecular systematic study Kainulainen et al. (2010) found Macbrideina to belong to the Tribe Condamineeae, and to be related to Condaminea.

Author: C.M. Taylor
The content of this web page was last revised on 1 May 2016.
Taylor web page: http://www.mobot.org/MOBOT/Research/curators/taylor.shtml

Distribution: Wet forest at 200-1700 m in the Andes, from Colombia to Bolivia.

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