E. Edgar

New species of Poa (Gramineae) and Ischnocarpus (Brassicaceae) from limestone, North Otago, South Island, New Zealand

Abstract Poa spania and Ischnocarpus exilis are described as new. Both are known only from a single limestone tower in karstland in North Otago, and add to the growing list of threatened endemic species found exclusively on calcareous and other base‐rich substrates. Associated indigenous and naturalised vascular plants form a distinct calcicolous group which includes several other unresolved and threatened endemic taxa.

Species novae graminum Novae‐Zelandiae I

Abstract Newly recognised grasses are described in preparation for the publication of Flora of New Zealand, Vol. 5, the grasses: two are new dioecious species of Poa, P. schistacea widespread on scree slopes in western Otago and P. xenica of Nelson on screes below marble bluffs; cleistogamous Deyeuxia lacustris is known from one locality in north‐west Nelson and another in North Canterbury; Dichelachne lautumia is restricted to a limestone quarry near the mouth of the Flaxbourne River, Marlborough.

TRISETUM PERS. (GRAMINEAE: AVENEAE) IN NEW ZEALAND

Abstract Trisetum Pers. (tribe Aveneae) is revised for New Zealand. Nine indigenous species are recognised; eight are endemic, and T. spicatum occurs in alpine regions of both hemispheres. Four species, T. arduanum, T. drucei, T. lepidum, and T. serpen‐tinum, are described as new, and T. antacticum var. lasiorhachis is raised to specific rank as T. lasiorhachis.

{iPuccinellia} Parl. (Gramineae: Poeae) in New Zealand

Abstract Puccinellia Parl., saltgrass, of temperate regions throughout the world, is revised for New Zealand. Four indigenous species are recognised: P. stricta shared with Australia; and three endemic species: P. raroflorens, described as new from salt pans in Central Otago and one locality on Stewart I., P. macquariensis, and P. walkeri, this last name being taken up for the species latterly known in New Zealand as P. novae-zealandiae. Subantarctic Puccinellia antipoda and P. chathamica are treated as subspecies within P. walkeri. Three naturalised species are recognised: P. distans from Eurasia, P. fasciculata from North America and Europe, and P. rupestris from Europe. Plants originally described as indigenous P. scott-thomsonii were found to be sterile and are included within P. fasciculata.

New Zealand species of Deyeuxia P.Beauv. and Lachnagrostis Trin. (Gramineae: Aveneae)

Abstract The New Zealand species of Deyeuxia and Lachnagrostis are delimited; three new species and two new subspecies of Lachnagrostis are described, one variety in Lachnagrostis is raised to specific rank, one new combination at specific rank is made in Lachnagrostis, and two species are transferred from Deyeuxia to Lachnagrostis. The generic separation of Southern Hemisphere Deyeuxia and Australasian Lachnagrostis is discussed, and a brief comparison is given of these two genera with Northern Hemisphere Calamagrostis.

Zotovia and Microlaena: New Zealand Ehrhartoid Gramineae*

Abstract A new generic name Zotovia Edgar et Connor is proposed in tribe Ehrharteae to replace the illegitimate name Petriella Zotov non Curzi. This endemic New Zealand genus is regarded as distinct from Ehrharta, Microlaena, and Tetrarrhena, and comprises three alpine species, Z. acicularis, described as new, and Z. colensoi and Z. thomsonii, both as new combinations. Microlaena is maintained against Ehrharta; its four species, already long established at that rank, are accepted. Lectotypification is proposed for Z. thomsonii, Microlaena carsei, and M. pohmoda.

Checklist of pooid grasses naturalised in New Zealand. 4. Tribe Poeae

Abstract Thirty three taxa of tribe Poeae, except Festuca, are reported as naturalised in New Zealand. Four other records are unsubstantiated. A key to native and naturalised genera is provided, as well as keys to naturalised species.

SPELLING NEW ZEALAND IN THE SPECIFIC AND INFRASPECIFIC EPITHETS OF VASCULAR PLANTS

Abstract There is confusion in the botanical literature over the correct forms of epithets used to refer to the country of New Zealand. A table giving original spellings of all specific and infraspecific taxa of vascular plants named after New Zealand is provided, along with corrected spellings and the reasons for these. It is suggested that new names would be more helpful if they were based on character states or habitats that distinguish the taxa being named.

Koeleria Pers. (Gramineae: Aveneae) in New Zealand

Abstract Koeleria (Gramineae: Aveneae) is revised for New Zealand. Three indigenous species are recognised: K. cheesemanii, K. novozelandica, and a new species K. riguorum of wet seepages in tussock grassland in Nelson. All species are endemic.

Orthography of some geographical epithets in the New Zealand flora revisited

Abstract The use of a Maori place‐name for a specific or infraspecific epithet as a word in apposition is sanctioned by the International Code of Botanical Nomenclature, and this has been the approach adopted to date by most New Zealand botanists. The epithets already published in this form do not require correction. It is recommended that when adopting Maori place‐names as epithets botanists continue to treat Maori place‐names as indeclinable, but clearly explain the origin and form of the epithets chosen.