Machaonia acuminata Bonpl.

Species

Angiosperms > Gentianales > Rubiaceae > Machaonia

Characteristics

Shrubs or small trees, occasionally armed with spines at nodes, to 1.2 cm long, lignose, occasionally with very small spinules, the branchlets terete, smooth, occasionally lenticellate, glabrous or puberulent, the nodes well spaced, frequently distichous. Leaves oblong, ovate oblong, ovate rotund, 4.5-10.0 cm long, 1.5-6.0 cm wide, deltoid to obtuse at the apex, often falcate cuspidate, the cusp usually short, the base acute, obtuse or rounded, occasionally slightly in-equilateral, the costa immersed or prominulous above, prominent beneath, the lateral veins 8-10, arcuate, immersed or prominulous above, prominulous be-neath, chartaceous, often stiff, usually concolorous, glabrate to villosulose above and beneath, the intervenal areas reticulate, the veinlets immersed beneath; pet-ioles 0.5-2.0 cm long, slender, to 0.1 cm wide, puberulent, the hairs often dense only on the adaxial side; stipules free, small, compressed rotund, ovate oblong or triangular, 2.0-3.5 mm long, acute or constricted terminally into a subulate extension about as long as the body, pubescent. Inflorescences terminal, ex-ceeding the uppermost leaves, thrysoid paniculate, 4-15 cm long, 3-9(-15) cm wide, the peduncles 2-4 cm long, to 0.2 cm wide, pubescent, the lowermost 2-4 pairs of branches usually opposite, usually strict and divergent, to 7 cm long, usually with 1 or 2 pairs of opposite secondary branches or with branches ter-nately disposed, the cymules terminal, densely flowered. Flower buds apically 1.0-1.5 mm wide, white, 4.2-5.0 mm long, the hypanthium turbinate or oblong, to 2 mm long, carnose, densely villosulose, the calycine cup scarcely measurable, glabrous and eglandular within, the lobes 5-6, erect, unequal, oblong, 0.6-1.0 mm long, villosulose outside and marginally; corolla tube compressed cylindrical, to 1.5 mm long, sparsely puberulent or occasionally glabrous outside, densely white villose within; stamens 5, the anthers oblong or subrotund, 0.3-0.6 mm long, dorsifixed, the filaments about as long as the anthers, attached near the apex of the tube; stigmas 2, erect, linear, 0.3-0.6 mm long, the style 1.0-3.5 mm long. Fruits turbinate, to 7 mm long, puberulent.
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Growth form tree
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Sexuality hermaphrodite
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Mature height (meter) 0.01
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Hardiness (USDA) 9-12

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Cultivation

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Distribution

Machaonia acuminata world distribution map, present in Belize, Brazil, Costa Rica, Ecuador, Guatemala, Nicaragua, Panama, and Paraguay

Conservation status

Machaonia acuminata threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:755452-1
WFO ID wfo-0000232344
COL ID 3WYSM
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Machaonia floribunda Machaonia velutina Machaonia acuminata Machaonia tysonii Machaonia veracruseana Bunophila lycioides