310 LANKESTERIANA FiGurE 7. Vanilla helleri Hawkes. Based on G. Davidse & R.W. Pohl 1503. Drawing by M. López <strong>and</strong> M. Soto. LANKESTERIANA 9(3), January 2010. © Universidad de Costa Rica, 2010.
soto arEnas & drEsslEr — A <strong>revision</strong> <strong>of</strong> Central American Vanilla 311 Cordillera Chontaleña, <strong>and</strong> on <strong>the</strong> Pacific slopes <strong>of</strong> S Costa Rica, especially in <strong>the</strong> Osa Peninsula. EcoloGy: In rainforest, with a short, marked dry season, at 200-570 m altitude; it flowers in March- April. This <strong>species</strong> has a lip with elongate, complanate appendages, similar to that found in V. insignis. The outline <strong>of</strong> <strong>the</strong> lip, with a cuneate base lacking a claw is very anomalous among American penicillate <strong>vanilla</strong>s <strong>and</strong> is reminiscent <strong>of</strong> some Old World <strong>species</strong>. In <strong>the</strong> original description Hawkes stressed that this <strong>species</strong> has no close allies in Central America. However, morphological <strong>and</strong> molecular data suggest that it is closely related to V. insignis <strong>and</strong> V. odorata, but <strong>the</strong> flowers are much smaller, <strong>and</strong> both <strong>the</strong>se <strong>species</strong> have conspicuously long-clawed lip. Vanilla helleri, described 30 years ago is one <strong>of</strong> <strong>the</strong> rarest <strong>vanilla</strong> in <strong>the</strong> area; it is known only from a couple <strong>of</strong> flowering herbarium specimens. Despite its rarity in <strong>the</strong> herbaria, V. helleri could be more common than usually thought. Several specimens <strong>of</strong> it are growing at Finca La Gavilana, Río Savegre, Costa Rica. Additionally, several non-flowering plants, that may be this <strong>species</strong>, have been located around Sta. María Chimalapa, in Oaxaca, Mexico. Most Mexican specimens have ra<strong>the</strong>r elliptic, broader leaves than Costa Rican material, but <strong>the</strong>y share <strong>the</strong> sulcate stems, papillose stem surface, abundant wax on stem apex, <strong>and</strong> <strong>the</strong> nucleotidic sequences are very similar to those <strong>of</strong> Costa Rica. Originally, <strong>the</strong> Mexican specimens were thought to be a hybrid between V. planifolia <strong>and</strong> V. insignis, since V. helleri has vegetative traits intermediate between <strong>the</strong>se <strong>species</strong>. We hope to see <strong>the</strong>ir flowers some day. OtHEr rEcords: COSTA RICA: PUNTARENAS: 2 km SW <strong>of</strong> <strong>the</strong> intersection <strong>of</strong> <strong>the</strong> Río Ceibo <strong>and</strong> Carretera Inter<strong>american</strong>a; elev. 200 m. Large vine climbing in a tree. 18 March 1969, G. Davidse 1503 & R.W. Pohl F(1731785)! MEXICO: OAXACA: [cf.] Planta jóven, silvestre, en selva alta perennifolia con Sebastiania, Quercus oleides, Terminalia, Acacia, Ampelocera, ca. km 42 del camino Mezquite- Sta. María Chimalapa, 390 m s.n.m., 20 Marzo 1997, A. Cibrián 11 & M. Soto (not preserved). [cf.] Tallos ásperos al tacto y subpapilosos, longitudinalmente sulcados; al sureste de Sta. María Chimalapa, vereda hacia el Río Milagro, paso Quetz Tug, 15/XI/98 a 6/XII/98, H. Hernández V7 sub M. Soto 8806 AMO(sterile, photo)! [cf.] Hojas subcuneadas en la base, algo oblanceoladas y algo oblicuas; 3 km al este de Sta. María Chimalapa, cerca de la cascada Arroyo Sangre. 15/XI/98 a 6/XII/98 H. Hernández V3 sub M. Soto 8811 AMO(sterile, photo)! [cf.] Tallos muy delgados, sulcados, ásperos, algo glaucos, hojas elípticas, flexibles y delgadas. Aproximadamente a 12 km al suroeste de Sta. María Chimalapa, a la orilla del camino Sta. María- El Mezquite, en la bajada de Zacatal, 15/XI/98 a 6/XII/98, H. Hernández V8 sub M. Soto 8817 AMO(sterile, photo)! Tallos muy delgados, sulcados, ásperos, hojas elípticas, flexibles y delgadas. Aproximadamente 1 km al noreste de Sta María Chimalapa, a 5 m de la vereda de Paso Lagarto. H. Hernández V2 sub M. Soto 8818 AMO (sterile, photo, ITS sequence)! rEFErEncEs: Hamer, Orch. Nicaragua, Ic. Pl. Trop. pl. 1192. 1984; Hamer, Selbyana 11. Orch. Centr. A. p. 847. 1990. 7. Vanilla inodora Schiede, Linnaea 4(4): 574-575. 1829. TYPE (?): “Baynilla de puerco Misantlensium”; Mexico, Misantla. Schiede 1044, K; “fruto inodori, Vanilla inodora nob. interin Vaynilla de puerco, Misantlensis .... Misantla, Mart 29 Schiede & BM! W(s.n.; x2)! Vanilla pfaviana Rchb.f., Gard. Chron. 2, 20. 230. 1883. Holotype: “Mexico” actually from Chiriquí, Costa Rica, R. Pfau [269] W(19347)! Vanilla preussii Krnzl., Notizbl. Bot. Gart. Berlin- Dahlem. 7: 320. 1919. Type: Bei der Planzung El Baúl im Buschwald, Heisst bei den Eingeborenen “Vainilla silvestre” (Preuss n. 1445), not seen. CoMMon naMEs: “Vainilla de puerco” (Ver.); “vainilla”, “vainilla cerro amarillo” (Oaxaca). Hemiepiphytic herb, vigorous,up to 12 m high. Stems terete, ca. 4-5 mm thick; internodes ca. 7.5 long. Leaves usually hanging <strong>and</strong> with bending blades; petiolate, <strong>the</strong> petiole ca. 1-2 cm long, twisted; blades elliptic to broadly elliptic, abruptely acuminate, thin, membranaceous when dry; 12-21 x 4.5-7 cm. Inflorescence similar to <strong>the</strong> vegetative shoots; ca. 30 cm long, bearing 3-5 flowers; <strong>the</strong> raceme bears progressively smaller foliaceous bracts. Bracts similar to <strong>the</strong> leaves, although smaller or much smaller, 3.3-12 x 1.0-5.2 cm; <strong>the</strong> internodes 3.5-7 cm long, ca. 2 mm thick. Flowers resupinate, with spreading segments, very showy, tepals apple-green or LANKESTERIANA 9(3), January 2010. © Universidad de Costa Rica, 2010.
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