Puccinia caricis-jilinensis Jing X. Ji, Zhuang Li, Y. Li & Kakish. 2022, sp. nov.
Creators: name: Ji, Jingxin
name: Li, Zhuang
name: Li, Yu
name: Kakishima, Makoto
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Pucciniomycetes
Pucciniales
Pucciniaceae
Puccinia
Puccinia caricis-Jilinensis

description: C17: Puccinia caricis-jilinensis Jing X. Ji, Zhuang Li, Y. Li & Kakish. sp. nov. (Fig. 20)   
MycoBank No: MB 838303.  
 Diagnosis: —This species is phylogenetically close to P. moiwensis and P. caricis-rafaensis having spermogonial and aecial stages on Urtica, but has a distinct lineage from them. Teliospores are also smaller, especially in width.   
 Typus: — CHINA, Jilin Province, West of Changbai Mountain, uredinia and telia on Carex siderosticta Hance, 1 September 2018, M. Kakishima & J. X. Ji, HMJAU 8842, Holotype. CHINA, Jilin Province, Jilin, Jiaohe, spermogonia and aecia on Urtica laetevirens Maxim., 1 July 2018, M. Kakishima & J. X. Ji, HMJAU 8846, Epitype.   
 Etymology: —Named after host plant genus of uredinial and telial stages, and locality of collection, Jilin Province.   
 Description: — Spermogonia amphigenous, honey-yellow, grouped, subepidermal, flask-shaped, type 4 of Cummins & Hiratsuka (2003). Aecia is mostly hypophyllous, sometimes in large groups, spreading along veins, pale yellow, cupulate with peridia, Aecidium - type. Peridial cells firmly conjunct, cubic to polygonal, hyaline. Aeciospores catenulate, globose to subglobose, angular, 14.5–16.5 × 12.5–14.0 µm (av. 15.5 × 13.0 µm); walls hyaline, 0.5–0.8 µm (av. 0.7 µm) thick, densely verrucose with big granules. Uredinia hypophyllous, scattered, minute, brown, covered by epidermis but eventually erumpent. Urediniospores globose or subglobose, 21.5–24.5 × 19.0–24.0 µm (av. 23.0 × 21.5 µm); walls brown, echinulate, 0.5–0.8 µm (av. 0.7 µm), germ pores 2–3. Telia hypophyllous, blackish brown, compact, rounded to broadly elliptic, erumpent. Teliospores broadly clavate, ellipsoid, rounded, mostly conical at apices, moderately constricted at the septa, attenuate at the bases, 33.5–42.0 × 10.0–13.0 µm (av. 37.5 × 11.5 µm); walls chestnut-brown, 0.5–0.9 µm (av. 0.6 µm) thick at sides, 6.6–9.9 µm (av. 7.8 µm) at apices; pedicels persistent, hyaline to pale brown, thin-walled, 13.0–29.0 µm (av. 18.5 µm) long.   
 Additional specimens examined from northeastern CHINA: — Jilin Province, Jilin, spermogonia, and aecia on Urtica laetevirens, 29 June 2017, HMJAU 8845. Heilongjiang Province, Wuchang, spermogonia and aecia on U. laetevirens, 2 June 2018, HMJAU 8847. Jilin Province, Tonghua, uredinia, and telia on Carex siderosticta, 2 October 2015, HMJAU 8837, 3 October 2015, HMJAU 8840. Jilin Province, Jilin, uredinia, and telia on C. siderosticta, 12 September 2017, HMJAU 8838, 8848. Jilin Province, Changchun, uredinia, and telia on C. siderosticta, 5 July 2018, HMJAU 8839. Jilin Province, West of Changbai Mountain, uredinia and telia on C. siderosticta, 1 September 2018, HMJAU 8844. Jilin Province, Baishan, uredinia, and telia on C. siderosticta, 3 September 2018, HMJAU 8843. Heilongjiang, Wuchang, uredinia and telia on C. siderosticta, 9 September 2017, HMJAU 8841, 6 June 2016, HMJAU 8849.   
 Hosts and distribution in northeastern CHINA (Fig. 1): —Spermogonia and aecia on Urtica laetevirens (Urticaceae) (B, C). Uredinia and telia on Carex siderosticta (A, B, C, D, G).   
 Note: — Carex siderosticta is a common species in the study area. Five species, P. caricis-siderostictae Dietel, P. hyalina Dietel, P. mandshurica Miura, P. miyakei Syd. & P. Syd. and P. taganesuge Miura, have been reported to produce uredinia and telia on C. siderosticta (Ito 1950, Hiratsuka et al. 1992, Ono 1995, Zhuang et al. 1998, Azbukina 2005, 2015). Among them, specimens of this clade are morphologically similar to those of P. miyakei and P. mandshurica reported from northern Asia in the shape and size of the urediniospores and teliospores. However, spermogonial and aecial stages of P. miyakei have been reported as being produced on Alangium (Ono 1995), and the urediniospores of P. mandshurica have a verrucose surface (Ito 1950, Hiratsuka et al. 1992). This clade is also phylogenetically separated from that of other species having spermogonial and aecial stages on Urtica (P. urticata, P. urticae-inflatae, P. moiwensis, and P. caricis-rafaensis) and is, therefore, treated as a distinct species. The wide distribution of this species in the study area is suspected because many specimens have been collected in various places.
description: Published as part of Ji, Jingxin, Li, Zhuang, Li, Yu & Kakishima, Makoto, 2022, Phylogenetic approach for identification and life cycles of Puccinia (Pucciniaceae) species on Carex (Cyperaceae) from northeastern China, pp. 221-255 in Phytotaxa 542 (3) on page 250, DOI: 10.11646/phytotaxa.542.3.1, http://zenodo.org/record/6416737