Pfeiffera miyagawae
Pfeiffera miyagawae in Cact. Succ. J. (Los Angeles) 59: 63-64. 1987 sec. Korotkova & al. 20101
- ≡Lepismium miyagawae in Bradleya 5: 99. 1987 syn. sec. Korotkova & al. 20101
- ≡Rhipsalis miyagawae in Cact. Succ. J. (Los Angeles) 68(3): 156. 1996 syn. sec. Korotkova & al. 20101
- Isotype: Bolivia, locality incorrectly given as "Bolivia, Cochabamba, between Cochabamba and Santa Cruz, yungas of Alto Beni, near Mataral, 600 m", probably collected near La Asunta., 1974, Miyagawa s.n. (B)
- Holotype: Bolivia, locality incorrectly given as "Bolivia, Cochabamba, between Cochabamba and Santa Cruz, yungas of Alto Beni, near Mataral, 600 m", probably collected near La Asunta., 1974, Miyagawa s.n. (HEID)
- 1. Korotkova, N., Zabel, L., Quandt, D. & Barthlott, W. 2010: A phylogenetic analysis of Pfeiffera and the reinstatement of Lymanbensonia as an independently evolved lineage of epiphytic Cactaceae within a new tribe Lymanbensonieae. – Willdenowia 40: 151-172. http://doi.org/10.3372/wi.40.40201
Distribution (Area)
Bolivia endemicA
Distribution (General)
Bolivia.
The collector M. Myagawa himself reported that the species occurs in the area between Comparapa and Samaipata. It is probable that the species can also be found in semihumid forests of the montane Yungas forests of Department of Santa Cruz (Prov. Florida to Prov. Caballero).B
This species had been long known only from the type collection, but the type locality as given in the first description "yungas of Alto Beni, near Mataral (between Cochabamba and Santa Cruz, Dept. Cochabamba, Bolivia) in 600m altitude" has been suspected to be incorrect (Ibisch & al. 2000). It has been only recently re-collected in Bolivia, dept. La Paz, prov. Sud Yungas, south of La Asunta, 31.10.2003, 750 m, Krahn 1044 (B), cult. Bot. Gart. Bonn, acc. 25775. It seems now very likely that the type collection was also made at the same locality near La Asunta, not near Mataral; further comments by Bauer (2005).C
Diagnosis
Planta epiphytica frutescens caulibus usque ad 100 cm longis et 2 cm latis, 3-4 angulatis. Areolae parvulae, spinis ad 7mm longis. Flores splendide aurantiaci, subcampanulati, ca. 15 mm longi et usque ad 30-40 mm lati. Perianthium radians ca. 25 tepalis ad 15 mm longa. Pericarpium tuberculatum areolibus spinosis. Fructus bacca albida, tuberculata spinosaque, spinis ad 5 mm longis. Semen oblongatum 1.7 mm longum et 1 mm latum. Testa brunnea cellulis subconvexis foveolis ihterstitialibus. Habitat epiphytice sylvis Boliviae ("Yungas", Provincia Cochabamba, Alto Beni, prope Mataral, 600 m altitudo).A
Description
Habit: shrubby succulent epiphyte; first erect, later sprawling-pendent; laterally or basally branching. Stems up to 100 cm long, fleshy-soft, 1,5-2 cm in diameter; mostly 3-angled, rarely 4-5 angled; only slightly subcrenate.
Areoles about 1-2 cm distant from each other with very short white wool, up to 10 soft lateral bristles and 3-5 whitish spines up to 7 mm long.
Flowers abundant near apices of stems, broadly subcampanulate, very large, ca. 15 mm long and 30-40 mm wide. About 25 tepals up to 15 mm in length and 7 mm broad of brilliant orange color (about same flower color as in Acanthorhipsalis monacantha or Echinocereus salm-dyckianus).
Stamens whitish, about 120 per flower, up to 7 mm long; inserted in a single zone around a slightly developed disc in the base of the flower.
Pollen hexacolpate, about 50 um in diameter; tectum with very short spinulae and numerous small perforations.
Style 10 mm long, white, with about 6 papillose white stigma lobes. Pericarp about 9 mm in diameter, strongly tuberculate with numerous bristly areoles. Pericarp wall with abundance of large mucilage cells. Fruit whitish, rather small, globose-tuberculate, about 10 mm in diameter. Numerous areoles with ca. 10 soft spines up to 5 mm long. About 20 seeds per fruit, 1.7mm long and 1 mm broad; testa light brown with slightly convex cells and deeply depressed cell corners (cereoid testa type, not rhipsaloid).
A
Bibliography
A. Barthlott, W. & Rauh, W. 1987: Pfeiffera miyagawae, a new orange flowered species from Bolivia. – Cactus and Succulent Journal 59: 63-65
B. Ibisch, P.L., Kessler, M., Nowicki, C. & Barthlott, W. 2000: Ecology, biogeography and diversitiy of the Bolivian epiphytic cacti – with the discription of two new taxa. – Bradleya 18: 2-30. http://doi.org/10.25223/brad.n18.2000.a2
C. Korotkova, N., Zabel, L., Quandt, D. & Barthlott, W. 2010: A phylogenetic analysis of Pfeiffera and the reinstatement of Lymanbensonia as an independently evolved lineage of epiphytic Cactaceae within a new tribe Lymanbensonieae. – Willdenowia 40: 151-172. http://doi.org/10.3372/wi.40.40201