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Project Name Data (Last Modified On 7/23/2013)
 

Flora Data (Last Modified On 7/23/2013)
Genus Disterigma (Klotzsch) Niedenzu
PlaceOfPublication Bot. Jahrb. Syst. 11: 160, 209. 1889.
Note LECTO- TYPE: D. empetrifolium (H.B.K.) Drude.
Synonym Vaccinium sect. Disterigma Klotzsch, Linnaea 24: 57. 1851. Vacciniopsis Rusby, Bull. Torrey Bot. Club 20: 433. 1893. TYPE: V. ovata Rusby = Disterigma ovatum (Rusby) Blake.
Description Bushy to straggly, terrestrial or epiphytic shrubs. Leaves alternate, less than 3 cm long, short petiolate, coriaceous, usually obscurely nerved. Inflorescence an axillary cluster of 1-6, often subsessile flowers subtended by a few, minute, subcoriaceous bracts and borne on basally bracteate and always apically bi- bracteolate pedicels. Flowers obscurely articulate with the pedicel and embraced by the closely subtending bracteoles; hypanthium campanulate to short cylindric; calyx lobes 4-5, suberect; corolla subcylindric or campanulate cylindric, 4-5- lobed; stamens usually twice as many as the corolla lobes but rarely of the same number as the lobes, the filaments ligulate, the anthers dorsally attached near the base, membranous, prolonged into (1)2 tubules and dehiscing by elongate, elliptical, introrse clefts; style filliform and about as long as the corolla, the stigma truncate; ovary inferior, (3)4-5-celled with numerous ovules and surmounted by a fleshy, mound-like ring. Berry coriaceous.
Habit shrubs
Distribution Disterigma is a small genus of about 25 species ranging from the highlands of Guatemala south to Bolivia and east into the Guianas.
Reference Smith, A. C. 1933. The genera Sphyrospermum and Disterigma. Brittonia 1: 203-232. Wilbur, R. L. 1974. The Central American species of the genus Disterigma (Ericaceae: Vaccinieae). Bull. Torrey Bot. Club 101:245-249.
Key a. Lobes of calyx and corolla 3; corolla deep red; stamens 6 -4. D. trimerum aa. Lobes of calyx and corolla 4; corolla white or pale greenish white; stamens 8. b. Thecae of anthers both emptying into a single tubule about 1.5 mm long; leaves mostly more than 1 cm long and wide and with an apiculus 1-2 mm long ...... 5. D. utleyorum bb. Thecae of anthers each emptying into its own tubule (i.e. tubules 2 per anther) 2 mm long or longer; leaves mostly 1 cm or less long and wide and nonapiculate. c. Leaf-blades 2.5 times as long as wide or less and 4 mm wide or wider; calyx lobes eciliate; calyx tube 4-angled in cross-section; corolla tube 6-8 mm long ...... 1. D. humboldtii cc. Leaf-blades 3 or more times as long as wide and 2.5-4.5 mm wide; calyx lobes ciliate; calyx tube terete or nearly so in cross-section; corolla tube 4-6 mm long. d. Calyx lobes 2-2.5 mm long; leaves typically widest at or near the middle, usually linear, mostly about 4 times as long as wide; Prov. de Darien ...... 3. D. panamense dd. Calyx lobes less than 2 mm long; leaves typically widest above the middle, oblanceolate, mostly about 3 times as long as wide; Prov. de Panama ...... 2. D. luteynii
 
 
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