Revision of Passiflora Subgenus Decaloba ... - Passion Flowers

entites in the left half of the scatter plot having larger flowers than those
individuals in the right half.
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The unrooted neighbor joining tree produced from an analysis of the entire
morphological data set of the P. suberosa complex (Tab. 5.4-5.5) is shown in Fig.
5.3. Passiflora suberosa ssp. suberosa and P. tridactylites, the two most
morphologically distinct taxa in the P. suberosa complex, are clearly resolved at
the “top” of the tree. One accession of P. suberosa ssp. litoralis from the
Galapagos is more similar to P. tridactylites than to other members of the
subspecies from Central and South America, but P. tridactylites can be easily
separated from this accession by its elongated androgynophore (the average
androgynophore length of P. tridactylites is 7.5 mm and the average
androgynophore length of this accession of P. suberosa ssp. litoralis from the
Galapagos is 5.9 mm; char. #19) and longer outer coronal filaments (the average
length of the filaments in the outer coronal row of P. tridactylites is 7.5 mm and
the average length of the filaments in the outer coronal row of this accession of
P. suberosa ssp. litoralis from the Galapagos is 5.2 mm; char. #8). Passiflora
suberosa ssp. suberosa forms two distinct clusters, a Lesser Antillean group and
a largely Greater Antillean group, with one accession from Hawaii (Oahu) and
one from St. Croix found within the Greater Antillean cluster.
Most of the P. pallida accessions form a cluster toward the “base” of the
neighbor joining tree, but four accessions of P. pallida are placed elsewhere,
intermixed with P. suberosa ssp. litoralis, indicating that the differences between
these two taxa are sometimes difficult to discern. There are many smaller