Flora of North America species comparison

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Araujia

araujia, bladder-flower
Habit Lianas; latex white.
Stems

prostrate or twining, unarmed, glabrous or eglandular-pubescent.
Leaves

persistent to semipersistent, opposite, petiolate;

stipular colleters absent or 2, 1 borne at base of petiole on each side, interpetiolar and infrapetiolar colleters absent;

laminar colleters present.
Inflorescences

extra-axillary, solitary, racemose or cymose, pedunculate.
Flowers

calycine colleters absent or present;

corolla white, light pink, or pale to waxy green, rotate or funnelform, aestivation valvate;

corolline corona absent;

androecium and gynoecium united into a gynostegium adnate to corolla tube;

gynostegial corona a tube or interrupted and of cartilaginous to fleshy, irregularly toothed to entire segments;

anthers adnate to style, locules 2;

pollen in each theca massed into rigid, vertically oriented pollinium, pollinia lacrimiform, joined from adjacent anthers by translators to common corpusculum and together forming pollinarium.
Fruits

follicles, solitary, pendulous or somewhat deflexed, green, ovoid, terete or somewhat compressed, smooth or longitudinally furrowed, glabrous or pubescent.
Seeds

obdeltate, obpyriform, or oblong, flattened to navicular, winged or not, not beaked, comose, not arillate.
x

= 10, 11.

Araujia
Distribution
from USDA
South America [Introduced in North America; introduced also in Central America, Europe, Africa, Pacific Islands, Australia]
[BONAP county map]
Discussion

Species ca. 12 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Sepals lanceolate to oblong, not leaflike, 1–3 mm wide; corollas rotate, pale to waxy green, gynostegial corona of staminal and interstaminal elements fused into tube, tube 5–8 mm, obscuring gynostegium; style-head extension absent.
A. odorata
1. Sepals ovate, leaflike, 3–7 mm wide; corollas funnelform, white or light pink, gynostegial corona of 5 distinct staminal elements, each to 3.9 mm, not fused into tube, tube 12.1–15.9 mm, not obscuring gynostegium; style-head extension 2-fid, 3.5 mm.
A. sericifera
Source FNA vol. 14. Authors: C. Lee Kimmel, Alexander Krings.
Parent taxa Apocynaceae
Subordinate taxa
A. odorata, A. sericifera
Name authority Brotero: Trans. Linn. Soc. London 12: 62, plates 4, 5. (1818)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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