Calamagrostis lahulensis G.Singh, in Taxon 33 (1) 94 (1984)

Prasad, Dileshwar, Kumar, Ravindra, Jaiswal, Shubham, Yadav, Rekha, Tiwari, Smita & Agnihotri, Priyanka, 2022, An update on the taxonomy of Calamagrostis nagarum (Bor) G. Singh and its allies (Poaceae, Agrostidinae): morphometrics and micro-morphology, PhytoKeys 212, pp. 135-155 : 135

1. Calamagrostis lahulensis G.Singh, in Taxon 33 (1) 94 (1984)

Replaced name

(typonym). Calamagrostis pulchella Griseb. Nachr. Ges. Wiss. Göttingen, Math. -Phys. Kl., 78 (1868), non Saut. ex Rchb. Fl. Germ. Excurs.: 26 (1830)

Lectotype

(designated here). -India. Sikkim, Guantong, 12,000 ft. [3657 m], 5 September 1849, [ Deyeuxia 10], J.D. Hooker s.n. (K000032374; digital image!). (Image available at https://plants.jstor.org/stable/10.5555/al.ap.specimen.k000032374)

Note.

Calamagrostis lahulensis was originally described by Grisebach (1868) as C. pulchella . Later, Hooker (1896) assigned C. pulchella to the genus Deyeuxia . Thereafter, Singh (1984) transferred the Indian species of Deyeuxia into Calamagrostis and proposed a new name C. lahulensis for C. pulchella Griseb. as the epithet " Calamagrostis pulchella " was preoccupied in Calamagrostis by the name C. pulchella Saut. ex Rchb. Grisebach (1868) proposed the name C. pulchella based on the heterogenous collections of Hooker, covering the regions between Garhwal and Sikkim Himalaya of India. Although all specimens seen by Grisebach, were 'sino numero’ (without collection number), he cited localities, altitude, date of collection, name of the collector, and annotation "10 Deyeuxia " in the protologue. While searching for the original specimens in various herbaria (BM, CAL, DD, E, K and P.), where most of the Hooker’s specimens are housed, we traced seven specimens at K (K000032374, K000032375, K000032376, K000032377, K000838345, K0000838346, and K0000838348), three specimens at CAL (CAL0000002397, CAL0000002398, and CAL0000002399), four specimens at W (W0026815, W1889-0241774, W1889-0038498, and W1916-00037771) and one specimen at E (E00394124). All the specimens have a label consisting of the collection details with the annotation '10 Deyeuxia 'and matched well with the protologue. Therefore, they should have been considered as syntypes (Art. 9.6 of the ICN; Turland et al. 2018). The specimens housed at K have been verified by H.J. Noltie as syntypes, while the specimens preserved at W and CAL have been verified by Beata Paszko, Polish Academy of Sciences Poland (KRAM) as type materials. In addition to these, L. Pignotti has also identified the specimens housed at W as syntypes. Another specimen housed at K (K000838347) was from East Nepal, and thus we have excluded it from type materials. We have also examined the type specimens of C. lahulensis housed at CAL, which has the same morphological characters, such as panicle short with about 3-4 cm long and congested and awn straight and shortly or not exserted from the spikelet as found in the typical form of C. lahulensis . Since Grisebach (1868) examined the grass specimens which were housed at Kew herbarium for the description of C. lahulensis , the nomenclatural type should be from the Kew specimens. The presence of rhizomes, culms, ligules, inflorescences, and spikelets and its good preservation makes the specimen K000032374 suitable to choose as the lectotype; the same has been designated here lectotype for the name C. lahulensis following Art. 9.3 of the ICN ( Turland et al. 2018).