Robust suffruticose perennial to 4 m.; stems thick and succulent, erect, simple, generally only branched at the base, densely leaved especially towards the apex, glabrous.. Leaves spirally arranged, occasionally subopposite; petiole (2–)4–13 cm. long; lamina oblong-elliptic to oblong or elliptic-lanceolate, 11.5–28 cm. long, 5.5–12.4 cm. broad, the apex subacute or shortly acuminate, the base slightly attenuate or subrounded, glabrous above, pubescent on the midrib and lateral veins beneath; lateral veins 16–26 pairs; margin finely crenate-dentate with several 2–2.5 mm. long fimbriae toward the bases; stipule-like processes present, crescent-shaped, 4–7 mm., cupped beneath.. Flowers in axillary fascicles of 3–10, epedunculate, white, the lateral united petals veined and dotted purple towards the base.. Bracts linear-subulate, 2–4 mm. long.. Pedicels 24–28 mm. long, slender, glabrous.. Lateral-sepals 2, broadly-ovate to oblong, 5–9 mm. long, 4–9 mm. broad, shortly apiculate, glabrous.. Lower sepal triangular-saccate, 15–20 mm. long, 6–8 mm. deep, constricted ± gradually into a 8–25 mm. long curved filiform spur, slightly swollen at the tip.. Dorsal petal 14–18 mm. long, 9–12 mm. broad, cucullate, dorsally with a narrow crest terminating in a short acute point.. Lateral united petals 34–39 mm. long, the upper and lower petal of each pair subequal in size; upper petal transversely oblong-elliptic, 15–23 mm. long, 8–11 mm. broad; lower petal oblong, 14–22 mm. long, 9–15 mm. broad, with an emargination distally along the inner margin.. Filaments 11–13 mm. long.. Ovary glabrous.. Fruit fusiform, with a short apiculum, 22–28 mm. long, 4.5–7 mm. broad, glabrous.. Fig. 3/45, p. 6.
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