Buddleja euryphylla Standl. & Steyerm.
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Authority
Norman, E. M. 2000. Buddlejaceae. Fl. Neotrop. Monogr. 81: 1-225. (Published by NYBG Press)
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Family
Buddlejaceae
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Scientific Name
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Type
Type. Guatemala. El Progreso: Between Finca Piamonte & top of Montaña Piamonte, along Joya Pacayal, Steyermark 43628 (holotype, F; isotype, US).
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Description
Species Description - Dioecious tree 8-15 m tall, young branches quadrangular, tomentose only at apex. Leaves with petiole 3-7 cm long, stipules auriculate, 2-3.5 x 3-5 mm, blades ovate to ovate-elliptic, 15-27 x 8-16 cm, membranaceous, upper surface glabrous or nearly so, below densely tomentose, at first underlain by glandular trichomes, becoming tomentulose; apex short acuminate or acute, base rounded or obtuse, margin entire or slightly undulate. Inflorescence 20-30 x 20-30 cm, paniculate with 3-4 orders of branches, basal branches subtended by leaves, upper ones by filiform bracts; cymules short pedunculate, with usually 3 flowers, 0.4-0.6 cm diam. Calyx campanulate, outside tomentose, tube 1.7-2.5 mm long, lobes 0.7-1 mm long, broadly triangular. Corolla yellow, campanulate, outside tomentose on upper half, inside with warty hairs at base of lobes and in upper part of tube, tube 2-2.5 mm long, lobes ovate-oblong rounded at tip 1.6-2.2 x 1.5-1.8 mm. Stamens with filaments 0.2-0.5 mm long, inserted 0.5-1 mm below sinus, anthers 0.4-0.8 mm long. Ovary ovoid, 1-1.5 mm long, tomentose, style 1-1.3 mm, stigma clavate 0.5-0.6 mm long. Capsules not available.
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Discussion
Buddleja euryphylla is most closely related to B. cordata. It differs from that species by its very broad leaves with short acuminate apices, a very elongate inflorescence with widely spaced secondary axes, and cymules with usually 3 flowers. In my earlier description (Norman, 1967) I mentioned that the stigma was divided into two lobes which arched towards each other. This is an anomaly found only in the flowers of the holotype.
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Distribution
This species is known from a few localized populations from Sierra de las Minas, Guatemala; Cordillera Miramunda and San Salvador Volcano in El Salvador and from Cordillera Merendon in Honduras at 2000-2500 m. Inhabitant of cloud forests. Flowering specimens from January and February.
Guatemala Central America| El Progreso Guatemala Central America| El Salvador Central America| San Salvador El Salvador Central America| Honduras Central America| Ocotepeque Honduras Central America|