downloads/Killip 2.pdf - Passion Flowers

520 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. XIX
narrowed at the base, entire, penninerved (nerves about 12 to 14 to a
side, the midnerve biglandular with scarlike glands close to its base),
membranous, glabrous above, light yellowish green beneath, hirsutulous
beneath, especially on nerves and veins; peduncles 2.5 to 3.5
cm. long, once dichotomous, the common peduncle and the branches
subequal, densely hirsutulous; bracts subulate, 1.5 to 2 mm. long,
soon deciduous; calyx tube campanulate, about 1 cm. long and 1 cm.
in diameter at the throat, densely hirsutulous without; sepals linearoblong,
about 3 cm. long, 9 to 10 mm. wide, hirsutulous without,
greenish without, white within; petals similar to the sepals, about
2.5 cm. long and 7 mm. wide, glabrous, white; corona filaments dark
brown, puberulent, in 5 series,
the outermost 1.5 cm. long, laterally
compressed, dolabriform, crenulate along the dilated part, subacute,
the filaments of the second series ligulate, 6 to 7 mm. long, those of
the other 3 series filiform, successively shorter, 4 to 1 mm. long;
operculum tubular, erect, about 1 cm. high, exserted, erose, reddish;
ovary ovoid, sulcate, truncate at apex, densely hirsute-tomentose.
Type in the United States National Herbarium, No. 1,662,988,
collected in the Carare Valley, near Puerto Berrio, Department of
Santander, Colombia, 100 to 700 meters, April 12, 1935, by Oscar
Haught (No. 1635}.
Astrophea is a well marked subgenus of Passiflora, and were
certain of the subgenera of Passiflora given full generic rank, Astrophea
would merit such treatment. Many of the species are true trees
or shrubs, with no vestige of a climbing habit; others are suberect,
with the tendrils reduced to coarse spines; still others apparently are
true tendril-bearing vines.
Six fairly well defined sections may be recognized; for three of
these Harms has proposed the names Euastrophea, Pseudoastrophea,
and Botryastrophea; three new sections are now being added. There
is considerable difficulty in separating the various species within these
sections.
Nearly all of them are quite rare, or, at least, infrequently
collected, several being known only from the single type collection.
Field notes are scant, and herbarium material often does not show
well the form of the corona and operculum, in which often lie
distinguishing characters between the species. Further field study
and the assembling of more material will doubtless modify the treatment
here given, in which I have maintained most of the known
species, even though at times the differentiating characters are
rather insignificant.
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