Comprehensive Description

provided by North American Flora
Siphocampylus maxonis F. E. Wimmer, Repert. Sp. Nov. 19:
259. 1924.
Stems simple or few-branched, erect, herbaceous or slightly woody at base, fistulous, up to about 4 mm. in diameter, green or purplish, 30-60 cm. high, glabrous below, the young growth sparsely pubescent with soft spreading hairs; cauline leaves 15 or fewer, spreading, membranous when dry, the blades glabrous above, sparsely hairy on the veins beneath, 2-4.5 cm. wide by 4-9.5 cm. long, mostly 2-2.5 times as long as wide, ovate, cordate at base with rounded lobes, gradually long-acuminate at tip, on slender hairy petioles 1.5-3 cm. long, the margins sharply serrate with 1-3 principal teeth per cm., these with 2-4 intermediate teeth, all the teeth with slender spine-like ascending tips; flowers 2-6 in the axils of the much-reduced upper leaves, the axis of the "inflorescence" thus 1-3 cm. long; pedicels spreading-ascending, about 0.4 mm. in diameter, 30-45 mm. long in fruit, sparsely hairy, each with a pair of filiform bracteoles, less than 1 mm. long, at or near the base; flower about 3.8 cm. long, including hypanthium; corolla red, sparsely chaffy-pubescent without, glabrous within, the tube straight, 25-28 mm. long, narrowly cylindrical for the basal 6 mm., this portion about 1 mm. in diameter, the upper part of the tube cylindric or narrowed at the mouth, about 3-4 mm. in diameter, the lobes little or not at all recurved, the 2 upper lanceolate, about 1.5 mm. wide by 8 mm. long, the three lower about 2 mm. w ide by 7 mm. long ; filament-tube 30-32 mm. long, glabrous, adherent to the narrow basal portion of the corolla-tube, sUghtly exserted; anther-tube about 4-5 mm. long, bluish-gray, the two shorter anthers white-tufted at tip, the others glabrous or v/ith a few hairs on the backs; h>'panthium in anthesis short-campanulate, pubescent, slightly acute at base, in fruit enlarging, becoming about 4 mm. broad; capsule more than half inferior, about 7 mm. long; calyx-lobes narrowly subulate, somewhat hairy, with 2-4 slender teeth on each margin, reddish or green in color, up to 1 ram. wide at base, 4-7 mm. long; seeds not seen.
Type locality: Chiriqui, Panain4; southern slope of Cerro de la Horqueta, humid forest around Las Siguas Camp, Maxon 5433 (US!).
Distribution: Known only from the type locality.
bibliographic citation
Rogers McVaugh. 1943. CAMPANULALES; CAMPANULACEAE; LOBELIOIDEAE. North American flora. vol 32A(1). New York Botanical Garden, New York, NY
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