A New Species and Notes on Drymonia (Gesneriaceae) from Costa Rica Ricardo KriebelInstituto Nacional de Biodiversidad, Apdo. 22-3100, Santo Domingo de Heredia, Costa Rica.
[email protected] A new species of Drymonia Martins, D.rubripilosa, is described, illustrated, and compared toD. multiflora (Oersted ex Hanstein) Wiehler, itsclosest presumed relative. The new species isdistinguished by its sparsely to densely red-pilosestem apices, petioles, pedicels, calyxes, corollas, andovaries. Its bivalved, fleshy capsule with fleshyindehiscent endocarp concealing the seeds is uniquefor Costa Rican species, shared otherwise only with D.folsomii and D. multiJlora. Taxonomic comparisonwith D. multiflora and keys to separate the latter fromD. rubripilosa are discussed.REiSLtMN. Se describe e ilustra una nueva especie deDrymonia Martius, D. rubripilosa, y se la compara conD. multiflora (Oersted ex Hanstein) Wiehler, especieque se presume es su pariente mas cercana. La nuevaespecie se distingue por sus ramitas distales, peciolos,pedicelos, calices, corolas y ovarios esparcida a mode-radamente rojo-pilosos. Su capsula bivalvada, car-nosa, con el endocarpo indehiscente y carnoso, quecubre a las semillas, es unico para las especiescostarricenses, y compartido unicamente con D.folsomii y D. multiflora. Se hace la comparaciontaxonomica con D. multiflora y se disculen las clavespara separar a esta de D. rubripilosa. Key words: Costa Rica, Drymonia, Gesneriaceae. Drymonia Marlius is one of the largest genera of Gesneriaceae in the Neotropics, with an estimated 140 species (Burtt & Wiehler, 1995). Traditionally, Drymonia has been separated from other genera in the tribe Episciae because of its basal poricidal de-hiscence of the anthers. Other characters that stand out in the genus are the scandent habit of many of its species and the usually funnel-shaped corolla with spurred base and laciniate lobes. The last and only revision of Costa Rican Drymoniawas carried out by C. V. Morton in 1938 for PaulStandley's Flora of Costa Rica; Morton recognized 12species of the genus. Since then, nomenclatural andtaxonomic actions have yielded a total of 19 speciesfor the country, making the genus the second largestin Costa Rica after Columnea (36 spp.) and beforeBesleria (15 spp.). Continuing efforts to documentCosta Rica's flora through the Manual de Plantas deCosta Rica project have produced interesting speci-mens of a new species of Drymonia as proposedbelow.Drymonia rubripilosa Kriebel, sp. nov. TYPE: Costa Rica. Limdn: Faja Costefia de Limdn, Asunci6n, 9�54'10"N, 83�10'20"W, 280 m, 15 Mar. 1995, A. Estrada 399 (holotype, INB; isotypes, CR, MO). Figure 1. Ilaec species Drymoniae multilorae (Oersted ex Hanst.) Wiehler affinis, sed pedicellis minorilus, lamina el calycis lobalis majoribus, ramis, petiolis, pedicellis, corolla el ovario rubropilosis differt. Semi-woody lianas; stems � terete, sparsely to densely red-pilose apically, trichomes ca. 1 mm long, internodes 1-7.5 cm, 1.5-4 mm diam., with reddish flaky epidermis in older stems, frequently with adventitious roots. Leaves somewhat unequal in a pair; petiole 3-10 mm long, 0.75-1.25 mm diam., red-pilose; blade elliptic, oblong or obovate, 3-13 X 1.6-6 cm, chartaceous, apex acuminate, base acute to rounded, margin denticulate to serrate, veins pinnate, 3 to 6 on each side, prominent on lower side, usually red, glabrous adaxially, sparsely to moderately pilose amaxially, especially on the prominent veins, tri-chomes 0.75-1.3 mm long. Inflorescence of solitary, axillary lowers; peduncles lacking; bracts inconspic-uous, linear, 2.5-5 mm long, red; pedicels 5-10 mm long, densely red-pilose. Flowers with calyx lobes divided almost to the base, 1.6-3 cm long, 3-15 mm wide at the base, the dorsal lobe somewhat smaller than the rest, lanceolate, the apex subulate, the margin deeply toothed to fimbriate, red to dark red; corolla 3-4 cm long, white with yellowish tinges inside the tube, with purple veins on the lobes adaxially, red-pilose especially on the distal exterior half of the tube dorsally, the latter ventricose toward the limb but then somewhat contracted, the spur ca. 5 mm long, glabrous, the limb somewhat 2-lipped, the lobes erose, the ventral lobe somewhat larger; stamens adnate to the corolla base, filaments connate above attachment to corolla, coiling after anthesis; disc a single posterior nectariferous gland; ovary 3-4 mm long at anthesis, red-pilose; style ca. 2 cm long. FruitNovoN 16: 65-68. PUBLISHED ON 25 MAY 2006.
Localities extracted from OCR text.
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