Wednesday, March 30, 2022

[Botany • 2022] Iris calcicola (Iridaceae) • A New Species from Limestone Areas of northern Guangxi, China based on Morphological and Molecular Evidence


Iris calcicola Z.C.Lu, Z.P.Huang & Yan Liu, 

in Lu, Huang, Yang & Liu, 2022. 
岩生鳶尾  || taiwania.NTU.edu.tw 

Abstract
Iris calcicola Z.C.Lu, Z.P.Huang & Yan Liu, a new species of Iris sect. Lophiris was found from limestone areas of Guangxi, China. Iris calcicola is similar to Iris japonica Thunb., but differs by its inflorescence simple; flowering stems ascendent, with 2–5 branches; spathes 2, narrowly lanceolate, 2–3.8 cm long, 1–2 (3)-flowered, apex acuminate; flower segments obliquely ascending, not spreading when blooming; pedicel enveloped by spathes or subequal to spathes; outer segments elliptic, with prominent, irregular, yellow crest.

Keyword: Iris japonica, Iris formosana, Iris sect. Lophiris, ITS, molecular phylogeny, taxonomy, trnL-F


Iris calcicola Z.C.Lu, Z.P.Huang & Yan Liu: 
A. Habitat, B. Habit with flowers, C. Habit with fruits.
D. Flower frontal view, E. Flower lateral view, F. Fruit.

Iris calcicola Z.C.Lu, Z.P.Huang & Yan Liu, sp. nov. 
岩生鳶尾 

Diagnosis: Iris calcicola is similar to Iris japonica Thunb., but differs from the latter species in its inflorescence simple; flowering stems ascendent, with 2–5 branches; spathes 2, narrowly lanceolate, 2–3.8 cm long, 1–2 (3)-flowered, apex acuminate; flower segments obliquely ascending, not spreading when blooming; pedicel enveloped by spathes or subequal to spathes; outer segments elliptic, with prominent, irregular, yellow crest.


Iris calcicola Z.C.Lu, Z.P.Huang & Yan Liu: 
A1. Outer segment, A2. Inner segment, A3. Style branch, A4. Perianth tube and stamens,
B. Stamens frontal view and dorsal view, C. Opened fruit show seeds, D. Fresh seeds, E. Dry seeds.


Etymology: The specific epithet ‘calcicola’ refers to the limestone habitats of this new species.

  Distribution and habitat: Iris calcicola has only been collected from limestone areas of northern Guangxi, China (Fig. 5). It grows in the near foot of limestone forests or shrubs, at an elevation of 300–500 m.  


Zhao-Cen Lu, Zhang-Ping Huang, Ping Yang and Yan Liu. 2022. Iris calcicola (Iridaceae), A New Species from Limestone Areas of northern Guangxi, China based on Morphological and Molecular Evidence.   Taiwania. 67(2); 211-216. DOI: 10.6165/tai.2022.67.211