1 |
Stipules undivided, margin or apex toothed or entire; leaves orbicular-ovate or suborbicular, abaxially soft hairy. |
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(2) |
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Stipules pectinately or pinnately laciniate; leaves broadly ovate to suborbicular. |
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(3) |
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2 (1) |
Plants with soft hairs and needle-like prickles; petiole 5–10 cm; flowers to 3 cm in diam.; sepals leaflike, outer sepals pinnately lobed or incised-serrate, inner sepals serrate or entire. |
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194 R. calycinus |
+ |
Plants with soft hairs and reddish brown bristles; petiole 2–5 cm; flowers 1.5–2.3 cm in diam.; sepals ovate-lanceolate, apex often shallowly laciniate, rarely undivided. |
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195 R. pectinarioides |
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3 (1) |
Leaves abaxially tomentose; stipules pectinately or palmately laciniate; stems, petioles, pedicel, and calyx tomentose and with sparse, needle-like prickles; sepals ovate or triangular-lanceolate, apex often laciniate. |
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196 R. rolfei |
+ |
Leaves abaxially villous; stipules pectinately parted or deeply digitately divided; stems, petioles and pedicel villous and with soft bristles or villous and with sparse, needle-like prickles; abaxial surface of calyx densely minute tomentose and bristly, or with sparse, glandular hairs; sepals lanceolate or broadly lanceolate, entire or with few serrations or deeply divided or incised. |
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(4) |
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4 (3) |
Stipules pectinately parted; stems, petioles, and pedicels villous and with soft bristles; abaxial surface of calyx densely minutely tomentose and bristly, or with sparse, glandular hairs; sepals lanceolate, margin entire. |
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197 R. pectinaris |
+ |
Stipules deeply digitately divided; stems, petioles, pedicel, and calyx villous and with sparse, needle-like prickles; outer sepals broader, deeply divided or incised, inner sepals narrower, margin few-serrate or entire. |
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198 R. pectinellus |
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