Table 1 Comparison of diagnostic characteristics of S. tarokoense and related taxa
From: Sedum tarokoense (Crassulaceae), a new species from a limestone area in Taiwan
TAXA | S. alfredii | S. nokoense | S. tarokoense | S. uniflorum subsp. oryzifolium |
|---|---|---|---|---|
Stem | Green, thick | Reddish, thick | Reddish, thick | Reddish, slender |
Leaves | Green, linear-cuneate, spatulate or obovate, 12–30 × 2–6 mm, apex obtuse | Green; spatulate, 8–10 × 3–5 mm, apex obtuse | Reddish green; orbicular to ellipsoid, rather thick, 5–6 × 3–4 × 2–3 mm, apex obtuse | Yellowish green, densely arranged, ovate-oblong to oblong, 4–7 × 2 mm, apex round |
Sepal | Unequal in length, linear-spatulate | Unequal in length, oblanceolate-spatulate to linear-lanceolate | Near equal to slightly unequal in length, oblanceolate-spatulate | Nearly equal in length, oblong-linear |
Inflorescence | Corymbiform, many flowered | Spicate-cyme, usually dichotomously branched | Spicate-cyme, usually dichotomously branched or only one branch, usually 3–5 flowers in each branch | Spicate-cyme, usually dichotomously branched or only one branch, usually 4–6 flowers in each branch |
Petal | Lanceolate to lanceolate-oblong, 4–6 × 1.6–1.8 mm, apex mucronate | Lanceolate, 4–5 × 1.5–2 mm, apex acuminate | Oblong-lanceolate to lanceolate, 4–5 × 1–1.2 mm, apex acute to acuminate | Obovate-spatulate, 4 × 1.5–2 mm, apex acute to acuminate |
Seed | Reddish brown, 0.732 ± 0.010 × 0.311 ± 0.003 mm; papilla surface near glabrous (Jin et al. 2008) | Yellowish brown, 0.6–0.75 × 0.23–0.32 mm; papilla ca. 20 μm, surface obviously irregularly folded | Dark yellow to brown, 0.7–0.94 × 0.32–0.44 mm; papilla ca. 20–25 μm, surface obviously irregularly folded | Dark yellow to brown, 0.5–0.6 × 0.23–0.27 mm; papilla ca. 15 μm, surface obviously irregularly folded |