A new Guzmania from Southeastern Ecuador.
Article Type: Report
Subject: Bromeliaceae (Discovery and exploration)
Bromeliaceae (Identification and classification)
Bromeliaceae (Physiological aspects)
Plant physiology (Research)
Species (Discovery and exploration)
Botany (Morphology)
Botany (Research)
Authors: Luther, Harry E.
Norton, Karen F.
Pub Date: 11/01/2008
Publication: Name: Journal of the Bromeliad Society Publisher: Bromeliad Society International Audience: Academic Format: Magazine/Journal Subject: Biological sciences Copyright: COPYRIGHT 2008 Bromeliad Society International ISSN: 0090-8738
Issue: Date: Nov-Dec, 2008 Source Volume: 58 Source Issue: 6
Topic: Event Code: 310 Science & research
Geographic: Geographic Scope: Ecuador Geographic Code: 3ECUD Ecuador
Accession Number: 192689065
Full Text: Most small species of Guzmania are epiphytes in wet forests. Many of the larger, tougher leaf species are terrestrials and lithophytes often in bright light. Only a few, like the following one, are streamside dwellers where they may occasionally be inundated at times of high water.



Guzmania pseudodissitiflora H. Luther & K. Norton, sp. nov.

TYPE: Ecuador. Zamora-Chinchipe, along the Rio Nangaritza, 800 m elev., lithophyte and rheophyte, J. Kent legit. Flowered in cultivation, SEL 2008-05, 1 April 2008, H.E. Luther s.n. (Holotype: OCNE; Isotype: SEL).

Plant a terrestrial, lithophyte or rheophyte, flowering 40-60 cm tall, spreading by 2-6 cm x 5 mm slender stolons. Leaves laxly spreading, 20 to 30 in number, 30-45 cm long, thin coriaceous; leaf sheaths elliptic, 2-3 x 1-2 cm, castaneous and dark punctatelepidote especially abaxially; leaf blades linear, attenuate, 3-10 mm wide, nerved, scattered punctate-lepidote, bright green. Scape erect, 25 cm x 5 mm, sparsely punctate-lepidote; scape bracts erect, imbricate, the lowest with a narrowly triangular, attenuate blade, the upper elliptic and apiculate, green (the lowest) to reddish (the upper), all exceeding the internodes, thin coriaceous, nerved. Inflorescence simple, subdensely 10 to 18-flowered, 8-12 x 4-5 cm; floal bracts broadly elliptic, broadly acute, 19-26 x 15-22 mm, thin coriaceous, nerved, nearly glabrous, red or pink. Flowers spreading at 30[degrees]-45[degrees] from the axis at anthesis, each with a 3-7 x 2 mm pedicel, opening during the day; sepals elliptic, broadly acute to obtuse, cucculate, 23-26 mm long, basally connate for 10-12 mm, thin, nerved, glabrous, yellow; corolla erect, spreading at the apex; petals spathulate, acute, 26-28 mm long, conglutinated into a tube for 20 mm, naked, yellow.

Paratype: Ecuador. Zamora-Chinchipe, Campamento Miazi, along the Rio Nangaritza, forest on peaty soil, 900 m elev. 19 Feb. 1994, H. van der Werff, B. Gray, E. Freire and M. Tirado 13299 (SEL, MO).

This new species most resembles Guzmania dissitiflora from SW Colombia and NW Ecuador on account of its often rheophytic growth habit and barely exserted corolla but differs by its shorter floral bracts (19-26 vs. 25-35 mm long) which are red or pink not purple, and a leafier more spreading rosette of foliage. In addition, G. dissitiflora usually has its flowers more laxly arranged and spreading at nearly 90[degrees] from the axis at anthesis (vs. 30[degrees]-45[degrees]).

Despite the apparent difference in arrangement of the inflorescence, figures 1 and 2 represent the same clone. The photo is of the plant flowered by J. Kent in California; the drawing is of the Holotype plant flowered and pressed at Selby. The Selby plant was grown a little harder with more light and for at least a short period, poor water. Flower shapes and sizes are the same, only density of the inflorescence differs. This interesting species requires very moist conditions in cultivation to prevent the emerging leaves from sticking together. Public conservatories might try growing it near or even in water features.

Harry E. Luther & Karen F. Norton (1)

(1) Mulford B. Foster Bromeliad Identification Centre, Marie Selby Botanical Gardens, 811 South Palm Avenue, Sarasota, FL 34236 USA. email: hluther@selby.org
A G. dissitiflora (Andre) L. B. Smith, cui similis
   affinisque, foliis numerosis espansisque,
   bracteis florigeris brevioribus differt.
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