Revision of Passiflora Subgenus Decaloba ... - Passion Flowers

361
Passiflora mcvaughiana
Description of Passiflora mcvaughiana
13. Passiflora mcvaughiana J. M. MacDougal. Novon 11: 69-75. figs. 1 & 2.
2001. TYPE: MÉXICO, México, Mpio. Temascaltepec, N of Temascaltepec on
rte. 134, ca. 11 mi. S of road to Tequesquipán, 6200 ft., oak woods, 24 Aug.
1978 (fl), J.M. MacDougal 369 (holotype: DUKE!; isotypes: IBUG, MEXU).
Slender, low-climbing or trailing, perennial vine 8 m long or more, sparsely
pubescent with unicellular curved trichomes on petiole, leaf, stem, and stipule
(rare), 0.3-0.6 mm long, 0.02 mm wide, also minutely antrorsely appressed-
puberulent throughout (except ovary) with unicellular, curved trichomes, 0.1-0.3
mm long, 0.02-0.03 mm wide. Flowering stems terete or somewhat compressed,
0.9-2.6 mm in diameter, with the base woody and cork-covered. Stipules
narrowly ovate, acute to slightly attenuate, longitudinally striate-nerved, 3.8-7.5
mm long, 0.3-0.8 mm wide; petioles 0.8-5.3 cm long, inserted 1.1-6.9 mm from
the basal margins of the peltate blades, eglandular or rarely with 1 or 2, round or
elliptic, opposite to subopposite, sessile or shortly stipitate, discoid nectaries with
flat rims, 0.8-1.3 mm wide (on the widest axis), 0.4-1.3 mm high, borne just below
(rare) or in the distal half of the petiole (0.45-0.86 of the distance from the base
toward the apex of the petiole). Laminas 0.9-7.3 cm long, 6.2-22.0 cm wide,
coriaceous, occasionally variegated along primary veins, conspicuously peltate,
transversely elliptic (widely divaricately bilobed), lateral lobes elliptic, acute to