Revision of Passiflora Subgenus Decaloba ... - Passion Flowers

364
1760 m, 19º02.46N, 100º02.95W, Porter-Utley & Mondragón 345 (CICY, FLAS);
Hwy. 134 between Temascaltepec and Tejupilco, seedling, 1760 m, 19º02.46N,
100º02.95W, Porter-Utley & Mondragón 346 (CICY, FLAS). –LOCALITY
UNKNOWN: Sessé & Mociño 4457 (AAU, F); Sessé & Mociño 4458 (F).
Notes
Passiflora mcvaughiana is one of three species found in southwestern
México previously known under the name of P. coriacea Juss. The other two
species are Passiflora obtusifolia and P. tacana, which are both extremely similar
vegetatively to P. mcvaughiana. Passiflora mcvaughiana can usually be
separated from P. obtusifolia because P. mcvaughiana commonly has a central
leaf lobe that is nearly as long as the lateral lobes at fertile nodes, as opposed to
having lateral lobes that are commonly twice as long as the central lobe in P.
mcvaughiana. Passiflora obtusifolia is commonly 3-lobed more than 0.20 the
distance to the base, as opposed to 3-lobed less than 0.20 the distance to the
base in P. mcvaughiana. Passiflora mcvaughiana lacks laminar nectaries,
whereas P. obtusifolia commonly has 2-6 nectaries present between the primary
leaf veins. Flowers are rarely produced in inflorescences in P. mcvaughiana, but
P. obtusifolia commonly has very long inflorescences. The pedicel in P.
mcvaughiana is longer than 10 mm, but the pedicel in P. obtusifolia is commonly
less than 10 mm long. The outer coronal filaments of P. mcvaughiana are longer
than 4.0 mm, linear, and dull purple toward their bases, those of P. obtusifolia are
commonly less than 4.0 mm long, linear/capitellate and greenish yellow or
greenish yellow with a flush of reddish purple at the base. Passiflora