Primulina linearicalyx (Gesneriaceae), a new species from Guangxi, China

Abstract

Primulina linearicalyx from Wuming County, Guangxi, is illustrated and described here. It is morphologically close to P. linearifolia, P. pseudolinearifolia and P. longgangensis, but it can be easily distinguished by the exceptionally long and linear-lanceolate to linear calyx lobes. The chromosome number for this species, being reported the first time, was determined to be 2n=36. The conservation status of the new species was assessed as “Critically Endangered” (CR) based on IUCN criteria.

Primulina wuae (Gesneriaceae), a new species from southern China

“…Calyx 5-sect from base; segments equal, narrowly lanceolate to lanceolate, 9-10 × c. 3.5 mm, outside puberulent and glandular puberulent, inside nearly glabrous, margin entire, apex acute. Corolla 35-40 mm long, dark pink to purple, the throat pale purple, the upper part of the interior of the corolla tube with 2016; Wen et al, 2016), and comparison to specimens of Primulina in herbaria (e.g. IBK, IBSC, KUN, PE), we have confirmed that it is indeed a new species of Primulina that is here described and illustrated.…”

Primulina malingheensis (Gesneriaceae), a New Species from a Karst Area in Guizhou Province, China

“…Overall, the shapes of the leaves and flowers are most similar to those of P. leei (Wen et al 2009, Weber et al 2011), but there are several differences (Table 1).…”

One transfer to Primulina (Gesneriaceae) and amended descriptions for P. crassifolia and P. quanbaensis from northern Vietnam

“…Chen & H.M. Yang 73117 (paratypes: GXMI050630!, GXMI050631!). ** Data is derived from Wen et al (2016) and type specimens; China, Guangxi: Wuming County, Liangjiang Town, 23 May 2010, B.D.Lai 111016‐1 (holotype: IBK!, isotypes: IBK!, ANU! ).…”

“…Among Chinese Primulina , many more species have the particular floral features mentioned above, and species with similar corollas as the two species here concerned have broader leaves. The species with the overall most similar floral and leaf characteristics to P. crassifolia may be P. linearifolia (W.T.Wang) Yin Z.Wang (2011) (as Chirita linearifolia W.T.Wang in Wang and Pan (1982)), and Primulina linearicalyx F.Wen, B.D.Lai & Y.G.Wei (Wen et al 2016), and it is compared here with these species (Table 1). Primulina quanbaensis shares with P. minutimaculata their leaf shape and the very distinct leaf vein colouration, but distinctly differs from the latter by its leaves in spiral, fleshy (versus opposite, coriaceous), much smaller, 2.5–7.0 × 0.4–1.0 cm (versus larger, 6.0–13.0 × 2.0–5.4 cm), inflorescence peduncle 2–4 cm long, puberulent and villous (versus 15–20 cm long, strigose), bracts narrowly lanceolate to linear, 2.0–3.0 × 0.5–0.8 mm (versus ovate, 15–25 × 8–10 mm), and pedicels and calyxes without glandular hairs (versus distinctly glandular hairy).…”