Classification
Class
Magnoliopsida Brongn.
Order
Asterales Link
Family
Compositae Giseke
Genus
Bartlettina R.M.King & H.Rob.
 Nomenclature
Scientific Name:
Bartlettina sordida (Less.) R.M.King & H.Rob., Phytologia 22: 161 (1971)
Synonymy:
  • ≡ Eupatorium sordidum Less.
Vernacular Name(s):
Bartlettina
 Description

Erect shrub up to c. 2 m tall. Stems covered in a tomentum of reddish purple-striped eglandular hairs at least above. Petiole tomentose, c. 5–10 cm long; lamina tomentose on veins on lower surface, otherwise with short hairs and sessile glands, ovate, acute to acuminate, denticulate to serrate, 11–25 × 8–25 cm; uppermost lvs smaller. Capitula c. 10 mm diam., many to numerous; peduncles tomentose. Inner involucral bracts ovate- to oblong-lanceolate, hairy near apex, c. 7–8 mm long; outer bracts from c. 3 mm long. Florets yellow tinged purplish, obscured by long filiform reddish purple stigmas. Achenes cylindric, slightly wider toward apex, dark brown, glabrous, 1.5–2 mm long.

[From: Webb et al. (1988) Flora of New Zealand. Volume 4.]

 Biostatus
Exotic
 Phenology

Flowering: Nov.–Jan.

 Bibliography
Biosecurity New Zealand 2012: Regional Pest Management Strategies Database. http://www.biosecurityperformance.maf.govt.nz/
Biosecurity New Zealand 4 Aug 2011: Unwanted Organisms Register. http://www.biosecurity.govt.nz/pests/registers/uor
Howell, C. 2008: Consolidated list of environmental weeds in New Zealand. DOC Research & Development Series 292: 42.
King, R.M. & Robinson, H. 1971: Studies in the Eupatorieae (Asteraceae). LXI. Additions to the Hebeclinium complex with Bartlettina, a new generic name. Phytologia 22(3): 160–162.
Ministry for Primary Industries 23 Feb 2017: Unwanted Organisms Register. Version 02.01.02. https://www1.maf.govt.nz/uor
Wilcox, M.; Bradshaw, C.; Cameron, E. 2004: Woody plants of the Auckland Domain. Auckland Botanical Society Journal 59(1): 44–56.
Weeds Key – interactive key to the weed species of New Zealand