Revision of Passiflora Subgenus Decaloba ... - Passion Flowers

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Passiflora tenuiloba is defined by its very short central leaf vein as compared to
its leaf width (quotient, i.e., central vein length/leaf width, commonly ranging from
0.64-0.22)(#32, 3), very wide angle between the lateral leaf veins (145-343
degrees)(#33, 3) and often very long lateral lobes as compared to the central
lobe (quotient, i.e., lateral vein length/central vein length, commonly ranging from
3.35-7.75)(#31, 3). In addition, this species has between 35 and 50 coronal
filaments in its outer and inner coronal rows (#7, 1/2; #10, 1), a floral nectary floor
that is sulcate (#71, 1), seeds that are between 4 and 5 mm long (#26, 1) and
narrower than they are long (quotient, i.e., seed length/seed width, commonly
ranging from 1.94-2.93)(#28, 2), and coriaceous leaves (#81, 2) with a short
central vein (commonly 5.74-18.50 mm)(#29, 3). Passiflora suberosa ssp.
litoralis commonly possesses three leaf lobes (only very rarely having unlobed or
bilobed leaves)(#84, 4).
The remaining members of the supersection (Passiflora clypeophylla, P.
juliana, P. viridiflora, P. megacoriacea, P. mcvaughiana, P. xiikzodz, P. itzensis,
P. sexocellata, P. coriacea, P. tacana, P. obtusifolia, P. eglandulosa, and P.
trinifolia) are defined by their widely diverging lateral lobes (the angle between
the lateral leaf veins is between 115 and 165 degrees) (#33, 2), central leaf veins
that are between half to three quarters the width of the leaves (#32, 1), and
discoid petiolar nectaries (#80, 3). Passiflora eglandulosa and P. trinifolia are
placed as sister species and possess wide foliose stipules (#39, 1; #90, 2) and
seeds with the micropylar end and chalazal beak erect and not inclined toward
the raphe (#95, 1). Passiflora trinifolia is unique in having a very reduced limen