Description
Key Characters:
Growth Form:
Shrubs or small trees 1–4 m tall.
Stems:
Young branches quadrate, densely villous to hirtellous.
Roots:
Leaves:
Leaves simple.
Opposite, decussate.
Blades elliptic–ovate to lanceolate, 4–12 cm long, 2–5 cm wide.
<u>Apex</u> acute to acuminate. Apex acute to acuminate.
<u>Base</u> obtuse to rounded. Base obtuse to rounded.
<u>Upper surfaces</u> strigose, the hairs not adnate to surface; <u>lower surfaces</u> sericeous. Upper surfaces strigose, the hairs not adnate to surface; lower surfaces sericeous.
<u>Margins</u> entire. Margins entire.
5–7-veined.
Petioles 5–20 mm long.
<b>Stipules</b> absent. Stipules absent.
Flowers:
Flowers in cymes, inflorescences terminal, 8–15 cm long (incl. peduncle), with 2 bracts subtending each simple cyme, bracts elliptic to elliptic–ovate, 2.5–3 cm long, 0.8–1.4 cm wide, deciduous, bracteoles enclosing and concealing floral buds.
Flowers bisexual (perfect). Hypanthium densely strigose; fruiting hypanthium 14–15 mm long, 9–10 mm wide.
<b>Calyx</b> lobes linear–subulate, 12–15 mm long, 3–5 mm wide, deciduous after anthesis.
<b>Corolla</b> of 5 petals, obovate, purple, 25–40 mm long, 20–40 mm wide.
<b>Stamens</b> twice as many as petals, dimorphic; <u>anthers</u> linear–subulate, with a ventrally inclined pore, larger anthers 15–16 mm long, connective prolonged 6–7 mm, with an appendage ca. 1 mm long, smaller anthers 11–14 mm long, with shorter connective and appendage but otherwise as in larger anthers; <u>filaments</u> glandular puberulent at base.
<b>Ovary</b> inferior, distinct, 4–5-celled, pubescent at the apex, placentation axile; <u>ovules</u> numerous; <u>style</u> simple; <u>stigma</u> terminal.
Fruit:
Capsules fully enclosed by the hypanthium.
<b>Seeds</b>: mature seeds not seen.
Ploidy:
2n = 56
Habitat:
Open and shaded areas in mesix to wet forests; forest edges; and clearings.
Elevation Range:
200–1,200 m.