Ranunculus trigonus Handel-Mazzetti 1931
Ranunculus tengchongensis and R. yanshanensis (Ranunculaceae), both described from Yunnan in China, are merged with R. trigonus
FIGURE 1. Holotype (A) and isotype (B, C) sheets of Ranunculus yanshanensis (= R. trigonus). A. Inset: portion of subappressed hirsute petiole. B. Inset: globose aggregate fruit. C. Inset: portion of subappressed hirsute stem.
FIGURE 4. Holotype sheet of Ranunculus trigonus. Inset: portion of sparsely spreading hirsute stem.
FIGURE 3. Holotype (A) and isotype (B) sheets of Ranunculus tengchongensis (= R. trigonus). Inset a: globose aggregate fruit; inset b: portion of hirsute stem; inset c: portion of hirsute petiole.
FIGURE 24. Distribution of Ranunculus trigonus (●). Red arrow indicates the holotype locality, i.e. Ninglang in northwestern Yunnan, China. Black arrows indicate the paratype localities. Blue arrow indicates the type locality of R. yanshanensis (=R. trigonus), i.e. Yanshan in southeastern Yunnan, China. Green arrow indicates the type locality of R. tengchongensis (=R. trigonus), i.e. Tengchong in western Yunnan, China.
FIGURE 18. Ranunculus yanshanensis (= R. trigonus) in the wild (China, Yunnan, Yanshan, type locality). A. Habitat. B. Habit. C. Roots. D. Portion of stem. E. Leaf (left: adaxial side; right: abaxial side). F. Flower (lateral view). G. Flower (top view). H. Sepal (left: abaxial side; right: adaxial side). I. Petal (left: adaxial side; right: abaxial side). J. Stamens. K. Carpels. L. Aggregate fruit. M. Achenes. N. Receptacle.
FIGURE 19. Ranunculus yanshanensis (= R. trigonus) in the wild (China, Yunnan, Yanshan, type locality). A. Habitat. B. Habit. C. Roots. D. Portion of stem. E. Leaf (left: adaxial side; right: abaxial side). F. Flower (lateral view). G. Flower (top view). H. Sepal (left: abaxial side; right: adaxial side). I. Petal (left: adaxial side; right: abaxial side). J. Stamens. K. Carpels. L. Aggregate fruit. M. Achenes. N. Receptacle.
FIGURE 21. Ranunculus tengchongensis (= R. trigonus) in the wild (China, Yunnan, Tengchong, type locality). A. Habitat. B. Habit. C. Roots. D. Portion of stem. E. Leaf (left: adaxial side; right: abaxial side). F. Flower (lateral view). G. Flower (top view). H. Sepal (left: abaxial side; right: adaxial side). I. Petal (left: adaxial side; right: abaxial side). J. Stamens. K. Carpels. L. Aggregate fruit. M. Achenes. N. Receptacle.
FIGURE 20. Ranunculus chinensis in the wild (China, Yunnan, Gengma). A. Habitat. B. Habit.C. Roots. D. Portion of stem. E. Leaf (left: adaxial side; right: abaxial side). F. Flower (lateral view). G. Flower (top view). H. Sepal (left: abaxial side; right: adaxial side). I. Petal (left: adaxial side; right: abaxial side). J. Stamens. K. Carpels. L. Aggregate fruit. M. Achenes. N. Receptacle.
FIGURE 25. Holotype (A) and isotype (B–D) sheets of Ranunculus trigonus var. strigonus. A. Inset: carpels with long, recurved styles.
Yanyuan, H. Handel-Mazzetti & Yanyuan Exped
Yunnan Jinsha River Exped & Yongsheng Chin. Med. Resour. Exped.