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(Last Modified On 9/4/2013)
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(Last Modified On 9/4/2013)
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Genus
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Gonzalagunia Ruiz & Pavon
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PlaceOfPublication
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Fl. Peruv. Prodr. 12. 1794.
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Note
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TYPE: G. dependens Ruiz & Pavon.
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Synonym
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Duggena West, Bidar. Ste. Croix 269. 1793. Nomen nudum. TYPE: D. richardii, based on Barleria hirsuta Jacq. Buena Cav., Anales Hist. Nat. 2: 278. 1800, not Pohl 1827. TYPE: B. panamensis Cav. Gonzalea Pers., Syn. PI. 2: 132. 1805. New name for Gonzalagunia Ruiz & Pav6n.
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Description
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Shrubs or small trees, the branchlets slender. Leaves petiolate or subsessile; stipules free, usually triangular subulate. Inflorescences terminal, elongate, slen- der, spiciform or thrysiform. Flowers with the hypanthium rotund, the calyx with 4-5 small, persistent lobes; corolla funnelform or salverform, the tube villous, the lobes 4-5, valvate or imbricate; stamens 4-5, the filaments slender, attached to the tube; anthers slender, included; ovarian disc crenulate, the style slender, the stigmas small, 2-4-lobed, the ovules numerous, the placentas small. Fruits baccate,'globose, 2-4-sulcate, the pyrenes 2 or 4, chartaceous to bony; seeds numerous, minute, subglobose, deeply foveolate.
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Habit
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Shrubs or small trees
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Distribution
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a genus of about 25 species, is common throughout the Amer- ican tropics and the West Indies.
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Note
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It is among the easiest genera of the Rubiaceae to recognize because of its pendent spiciform inflorescences.
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Reference
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Donnell-Smith, J. 1899. Undescribed plants from Guatemala and other Central American Republics. Bot. Gaz. 27: 336. Standley, P. 1921. New Rubiaceae from Colombia and Costa Rica. Contr. U.S. Natl. Herb. 17: 446. Standley, P. 1929. Studies of American plants II: Rubiaceae. Field Mus. Nat. Hist., Bot. Ser. 4: 278-281.
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Key
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a. Leaves 10-13 cm long; lateral veins of larger leaves 6-12. b. Largest bracts 5-8(-12) mm long; flowers blue; fruits dicoccus ...... 1. G. bracteosa bb. Largest bracts 3-5 mm long; flowers white or red; fruits 4-coccus. c. Leaves subsessile or with petioles to 0.3 cm long. d. Stipules subulate, 8-9 mm long; calycine lobes ca. 2 mm long, obtuse ...... 3. G. ovatifolia dd. Stipules ovate or deltoid, ca. 6 mm long; calycine lobes ca. 0.7 mm long, acute ...... 6. G. rudis cc. Leaves with petioles 0.5-2.0 cm long. e. Leaves 7-22 cm long; stipules 8-10 mm long, corolla pink, the tube ca. 8 mm long, densely appressed villose within ...... 5. G. rosea ee. Leaves 5-13 cm long; stipules ca. 3 mm long; corolla white, the tube 10.0- 13.5 mm long, glabrous within ...... 4. G. panamensis aa. Leaves 15-24 cm long; lateral veins of larger leaves 12-16 (except G. rosea). f. Lateral veins of larger leaves 12-16; flowers white. g. Flowers pedicellate ...... 2. G. kallunkii gg. Flowers sessile or subsessile ...... 7. G. veraguensis ff. Lateral veins of larger leaves 6-12; flowers pink ...... 5. G. rosea
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