Branches 4- or 5-winged, ribs broad, margin relatively straight or evenly spiral; young joints glaucous, becoming green
Areoles 30-35 mm apart, with 1 brown central spine 20-30 mm long, and 5-7 peripheral spines; glochidia absent
Flowers solitary
Sepals: segments greenish, lorate, with margins and apices red
Petals white, pink or red, lorate
Fruit (ripe) red, round, skin scaly, pulp white
Seeds black
x = 11 (1 report)
Nomenclature:
*Harrisia Britton
Britton 35: 561 (1908)
Britton & Rose 2: 147 (1920)
Obermeyer: 145 (1976)
IOS Working Party: 69 (1986)
IOS Working Party: 89 (1990)
Barthlott & Hunt: 178 (1993)
Eriocereus Riccob.
Riccobono: 238 (1909)
Distribution & Notes:
Global: Species ± 20, Caribbean and South America
Southern Africa: *Harrisia martinii (Labour.) Britton is naturalised in KwaZulu-Natal
References:
BARTHLOTT, W. & HUNT, D.R. 1993. Cactaceae. In K. Kubitzki, J.G. Rohwer & V. Bittrich, The families and genera of flowering plants 2. Springer-Verlag, Berlin
BRITTON, N.L. 1908. Harrisia, a new genus of Cactaceae. Bulletin of the Torrey Botanical Club 35
BRITTON, N.L. & ROSE, J.N. 1919-1923. The Cactaceae. Carnegie Institution, Washington
IOS WORKING PARTY 1986. The genera of the Cactaceae: towards a new consensus. Bradleya 4
IOS WORKING PARTY 1990. The genera of Cactaceae: progress towards consensus. Bradleya 8
OBERMEYER, A.A. 1976. Cactaceae. Flora of southern Africa 22
RICCOBONO, F. 1909. Studii dulle cattee del R. Orto Botanico di Palermo. Bollettino del R. Orto Botanico, Palermo 8
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