No.9 Li S., Pan B. , Xin Z.B., Fu L.F., Huang Z.J.& F. Wen

Petrocodon ionophyllus, a new species of Gesneriaceae from

the limestone areas of South China

Rheedea30(1): 150–158 (2020)

Journal of the Indian Association for Angiosperm Taxonomy

ABSTRACT

A new species, Petrocodon ionophyllus F.Wen, S.Li & B.Pan, from the limestone area of Southwestern Guangxi, South China is described here. Based on the population information and threatened situation, the current existence status of this species is assessed as ‘Endangered (EN)’.

Original article link:https://dx.doi.org/10.22244/rheedea.2020.30.01.09

Fig. 1.Petrocodon ionophyllus F.Wen, S.Li & B.Pan: a. Flowering plant; b. Opened corolla with stamens and staminodes; c. Pistil with calyx; d.Pistil without calyx; e. Bracts (left: abaxial surface; right: adaxial surface) (drawn by Lin Wen-Hong).

Fig. 2.Petrocodon ionophyllus F.Wen, S.Li & B.Pan: a. Habitat; b.Flowering plant in natural habitat; c.Lateral view of cyme, inflorescence withopen flowers, buds and bracts; d.Flower and anthers near corolla; e. Lateral view of corolla; f.Top view of corolla; g. Front view of open flowerand enantiostyly, deflection of style (stigma immature) andanthers; h. Stigma mature; i. Indumentum of abaxial surfaces of bracts and calyxlobes; j. Dehisced capsules and seeds (photos by Wen Fang).

Fig. 3.Distribution of Petrocodon ionophyllus F.Wen, S.Li & B.Pan (◆) and its morphologically similar species, P. integrifolius (D.Fang & L.Zeng) A.Weber & Mich.Möller (★) .

Fig. 4. Morphology comparison between Petrocodon ionophyllus F.Wen, S.Li & B.Pan and P. integrifolius (D.Fang & L.Zeng) A.Weber & Mich.Möller: (a.Habitat; b., c., d., e. After common garden experiment). 1. Petrocodon integrifolius; 2. P. ionophyllus: a.Habitat; b.Adaxialview of leaves; c.Abaxial view of leaves; d.Indumentum of leaf margins; e. Inflorescences; f. Frontal view of corollas (photos by Wen Fang).