Conostegia povedae (Kriebel & Oviedo) Kriebel,

Kriebel, Ricardo, 2016, A Monograph of Conostegia (Melastomataceae, Miconieae), PhytoKeys 67, pp. 1-326: 212-213

publication ID

http://dx.doi.org/10.3897/phytokeys.67.6703

persistent identifier

http://treatment.plazi.org/id/1DE8CE5F-83D4-54F2-83A3-972DD9B80803

treatment provided by

PhytoKeys by Pensoft

scientific name

Conostegia povedae (Kriebel & Oviedo) Kriebel
status

comb. nov.

Conostegia povedae (Kriebel & Oviedo) Kriebel  comb. nov. Fig. 186View Figure 186

Conostegia povedae  (Kriebel & Oviedo) Kriebel. Basionym: Miconia povedae  Kriebel & Oviedo, Phytotaxa 126 (1): 57. 2013. Type: Costa Rica. Puntarenas; Estación Biológica Las Cruces. En el Sendero Gamboa, 1157 m, 5 September 2008, 8.789333N, - 82.970250W, F. Oviedo-Brenes 231 (holotype HLDG!, isotype CR!).

Description.

Shrub to small tree to 2.5-4 m tall. Young branches tomentose with golden to orange indument consisting of dendritic to stellate trichomes. The interpetiolar line inconspicuous and covered by indument as in the stems. Leaves sessile or subsessile, somewhat anisophyllous. Leaf blades 9-24 × 5-9 cm, 3-5-plinerved, with the innermost pair of veins diverging from the midvein 1.5-7 cm above the base generally in asymmetric fashion, elliptic to obovate, the base attenuate, apex acuminate, the margin subentire to denticulate, adaxially glabrous, abaxially moderately stellate pubescent on tertiary and higher order veins. Inflorescence a terminal and deflexed panicle with dichasial branches, 5-10 cm long, with about 3-7 sessile flowers clustered at the end of the branches; bracts 2, 3-10 mm long, elliptic to ovate, persistent; bracteoles 2, ovate, ca. 1-2 × 0.5-1.25 mm, persistent. Flower buds 4-5 mm long, with the petals forming an acuminate cone when mature. Hypanthium narrowly campanulate, sparsely stellate. Flowers 5(-6) merous, calyx not calyptrate but with the calyx lobes fused and irregularly rupturing in their early stages, the calyx tube 0.3-0.5 mm, the teeth 0.25-0.4 mm long, linear-oblong. Petals 4.5-5.5 × 2-2.5 mm, white, spreading at anthesis, elliptic to elliptic-ovate, apically acute, glabrous. Stamens 10(12), 4-5 mm long, radially arranged around the style, the filament 2.25-2.75 mm long with a geniculation near the apex, white, anthers 1.5-2 × 0.6-0.8 mm, elliptic, somewhat laterally compressed, lacking an appendage or collar at the anther filament junction, yellow, pore ca. 0.15 mm wide, terminating the truncate apex. Ovary 5-locular, half superior, the apex beset with small brown glandular trichomes and elevated into a collar ca. 0.25 mm high around the style. Style ca. 6.4 mm long, straight to slightly curving, the stigma truncate, ca. 0.38 wide, the distance between the anther apex and the stigma ca. 1.5 mm, stigma truncate to capitellate, ca. 0.3 mm wide. Berry and seeds not seen.

Distribution

(Fig. 187View Figure 187). Endemic to the remaining primary forest in San Vito de Coto Brus, Puntarenas, Costa Rica at 1100-1200 m elevation.

Conostegia povedae  is a very narrow endemic easy to recognize because of its rusty indument, sessile leaves with attenuate leaf bases and which are strongly plinerved, and sessile flowers in clusters that when in bud have a fused calyx that ruptures irregularly. In their evidently yellow anthers, exserted styles, and geniculate filaments, Conostegia povedae  shows the typical floral morphology present in section Geniculatae  .

Specimens examined.

COSTA RICA. Puntarenas: Estación Biológica Las Cruces, en el Sendero Gamboa, Oviedo-Brenes and Zahawi 1215 ( HLDG); en el sendero Melissa, bosque maduro bastante denso, Oviedo-Brenes 1908 ( HLDG).

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Myrtales

Family

Melastomataceae

Genus

Conostegia

Loc

Conostegia povedae (Kriebel & Oviedo) Kriebel

Kriebel, Ricardo 2016
2016
Loc

Conostegia povedae

Kriebel 2016
2016
Loc

Miconia povedae

Kriebel 2016
2016