Figure 1.
Localities of the new species Ixeridium calcicola in Taroko National Park and the vicinities, eastcentral Taiwan.
1. Hopin forest trail; 2. Pilu; 3. Yenhai Forest Road, 4. Luanshan to Potolushan, 5. Tien-tsang Cliff. White-shaded area indicates Taroko National Park and purple-shaded areas show the distribution of metamorphosed limestone.
Figure 2.
Bayesian maximum clade credibility tree of Ixeridium-Ixeris.
The numerals beside branches are Bayesian posterior probabilities (PP; left) and bootstrap percentages (BP; right). Clade depth indicates mean nodal age (million years) and ingroup nodes with PP≥0.90 are annotated with the 95% highest posterior density (HPD) intervals for node ages by bars.
Figure 3.
Somatic chromosomes at mitotic metaphase.
A and D, Ixeridium calcicola (2n = 16); B and E, Ixeridium laevigatum (2n = 14); C and F, Ixeridium transnokoense (2n = 14). Asterisk (*) indicates t-chromosomes. Arrows indicate chromosomes with a secondary constriction (SC). Arrowheads indicate small constrictions. Scale bars, 5 ìm. Vouchers: A and D, Ching-I Peng 23905; B and E, Ching-I Peng 23562; C and F, Ching-I Peng 23904.
Figure 4.
A. Habit. B. Radical leaf, ventral view. C. Radical leaf, dorsal view. D. Capitulum. E. Involucre. F. Inner phyllaries. G. Pappus. I. Achene with pappus. Scale bars, 5 cm for A, 5 mm for B–G, 1 mm for H. All photos from Shih-Wen Chung 11693 (HAST, TAIF, TNS).
Figure 5.
A. Habit. B. Radical leaf blade, ventral view. C. Capitulum. D. Inner phyllary, dorsal view. E. Floret. F. Achene with pappi. All drawn from Shih-Wen Chung 11141 (TAIF).