I couldn't find the paper that clumped Quintinia serrata and Q. acutifolia but the one name is used by Eagle, Dawson & Lucas, and NZPCN at least and has been common usage for a long time as far as I know.
Collection events
Primary collection event
Collection event type:
Field
Standard locality
Location:
Lake Kaniere, between Rose Creek and Camp Creek, Plot AW122
Georeferences:
Latitude and Longitude (WGS84):
-42.82677 171.171081
Verbatim locality:
Lake Kaniere, between Rose Creek and Camp Creek, Plot AW122
Verbatim collector:
Alex Ghaemaghamy
Standardised collector:
Alex Ghaemaghamy
Verbatim date:
4 Nov 2013
Start date:
2013-11-04
Country:
New Zealand
Land District:
Westland Land District
Native lands:
Ngāi Tahu
Ngāti Rārua
Georeferences:
New Zealand Transverse Mercator:
1450507.7595E 5256799.5932N (WGS84 -42.826761 171.171079)
Altitudes:
from 370m
Habitat:
Mixed Podocarp/Broadleaf forest dominated by QUIacu and PRUfer. Open understory with a high litter ground cover. Very steep. Very diverse epiphyte community.
Notes:
DOC Tier 1 and MfE LUCAS Programme Plot: AW122; Sample Number: 201400177.