1 | Perennial shrubs or subshrubs |
1' | Annual herbs |
2 | Inflorescences compound, corymbose; a stout woody subshrub |
2' | Inflorescence a simple or very sparsely branched cincinnus |
3 | Petals shorter than sepals or about as long; flowers sessile or subsessile |
3' | Petals distinctly longer than sepals; flowers pedicellate |
4 | Inner sepals c. 6 mm long, thinly pilose; a slender trailing or decumbent subshrub |
4' | Inner sepals c. 6-9 mm long, densely white strigose along the nerves; a rather robust, sprawling or suberect subshrub |
5 | Inner sepals membranous, stramineous and conspicuously accrescent (and sligthly inflated) in fruit |
5' | Inner sepals herbaceous, not conspicuously accrescent in fruit |
6 | Plant with many glandular hairs; sepals obtuse; pedicels reflexed after anthesis |
6' | Plant pubescent or pilose; sepals acuminate or acute; pedicels erect, patent or arcuate |
7 | Pedicels patent or arcuate in fruit; inner sepals 4-5 mm long |
7' | Pedicels erect, straight and rather thick; inner sepals 8-15 mm long |
8 | Capsule glabrous with ciliate angles; seeds usually smooth or foveolate, or very sparsely papillose |
8' | Capsule pubescent, rarely glabrous except at the angles; seeds more or less densely crystalline-papillose |