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Project Name Data (Last Modified On 5/15/2013)
 

Flora Data (Last Modified On 5/15/2013)
Genus Juanulloa R. & P.
PlaceOfPublication Fl... Peru. Prod. 27, tab. 4. 1794.
Note TYPE: J. parasitica R. & P
Synonym Ulloa Pers., Syn. 1: 218. 1805. TYPE: Juanulloa parasitica R. & P. Laureria Schlecht., Linnaea 8: 513. 1833. TYPE: L. mexicana Schlecht. Portaea Tenore, Agli Sci. Ital. 7 Congr. 902. 1845. TYPE: P. aurantiaca Tenore. Sarcophysa Miers, Ann. Mag. Nat. Hist., ser. 2. 3: 166. 1849, nomen; 4: 190-1. 1849. TYPE: Sarcophysa speciosa Miers (= Juanulloa speciosa (Miers) Dun. in DC.).
Description Unarmed shrubs, mostly growing as hemi-epiphytes or doubtfully as parasites, often high in the forest canopy; the ends of the twigs often an expanded cicatrix from fallen leaves or inflorescences. Leaves simple, entire, of moderate size, glabrous to tomentose with dendritic hairs; minor leaves wanting. Inflorescence an open or congested variously branched panicle not exceeding the leaves, or sometimes reduced to a short raceme or spike, the peduncles and pedicels mostly stout and not elongating greatly in fruit. Flowers sometimes showy, calyx cam-
Habit shrubs
Description panulate, angled, sometimes fleshy, splitting halfway or more into 5 or fewer oblong or lanceolate lobes, mostly dendritic-pubescent outside; corolla bud somewhat pointed apically and slightly imbricate, when expanded mostly yellow, red or orange, tubular, slightly curved or saceate in the upper portion, slightly contracted at the apex with 5 short, deltoid or obtuse lobes, tomentose outside, sometimes pubescent within; stamens 5, equal, included or slightly exserted, inserted low in the tube, sometimes pilose and geniculate at the point of in- sertion, straight above the base, the anthers elongate, dehiscing by longitudinal slits, 4-thecate with a short apicule of mostly connective tissue; ovary superior in an annular, perigynous disc, ovoid, 2-loculed with many ovules, the stigma small. Fruit a many-seeded ovoid berry which does not exceed the calyx lobes; seeds flattened, with a slightly or strongly curved embryo.
Note As now constituted, Juanulloa includes about 10 species ranging fromn Mexico (Chiapas, Veracruz) to Colombia, Peru, and Equador. Collections have been taken from near sea level to 2,400 m in Colombia. These are seldom-collected plants, and there are few specimens in herbaria, probably because they are unnoticed or inaccessible in the treetops. The narrowly tubular, pubescent flowers separate Juanulloa from Markea, Solanum, Lycianthes, and Solandra, the solanaceous genera commonly occurring as hemi-epiphytes or treetop climbers in Panama. Material from Pavon of J. parasitica R. & P., the type species, was seen at the British Museum (BM) and designated as lectotype. Material at Montpellier (MPU) and some at the British Museum labelled J. parasitica is not this genus. No material was found at Madrid (MA). A few species are cultivated as novelties in temperate greenhouses. The genus takes its name from Jorge Juan, 1713-1773, and Antonio Ulloa, 1716-1795, botanists who travelled Peru and Ecuador.
Reference Cuatrecasas, J. The Colombian species of Juanalloa. Brittonia 10: 146-150. 1958.
 
 
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