Coprosma J.R. Forster & G. Forster,

Cantley, Jason T., Sporck-Koehler, Margaret J. & Chau, Marian M., 2016, New and resurrected Hawaiian species of pilo (Coprosma, Rubiaceae) from the island of Maui, PhytoKeys 60, pp. 33-48: 35-36

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scientific name

Coprosma J.R. Forster & G. Forster


Coprosma J.R. Forster & G. Forster 

Coprosma  Lectotype species (designated by Rehder 1949, pg. 597): Coprosma foetidissima  J.R.Forst. & G.Forst.


Shrubs, multi-branched, erect, occasionally creeping and sometimes rooting at the nodes, or occasionally trees, often foetid when bruised. Leaves simple, opposite or rarely ternate, margins entire, petiolate or sessile; stipules interpetiolar, distinct or partly connate, entire or dentate with tooth-like marginal colleters. Flowers unisexual (and the plants dioecious or rarely monoecious), rarely polygamous or in one species perfect, axillary, solitary or in cymes; calyx 4-5(-10)-toothed, often reduced or absent in male flowers; corolla funnelform or campanulate, 4-5(-10)-lobed, lobes valvate in bud; stamens 4-5(-10), inserted at base of corolla tube; filaments long-exserted, erect or pendulous; ovary 2(-4)-celled, ovule 1 per cell, basal, anatropous; style 2(-4)-lobed, divided nearly to base; stigmas long-exserted, papillose-hirsute. Fruits drupaceous, fleshy, ovoid to globose, with 2(-4), 1-seeded, plano-convex pyrenes.

Key to the Hawaiian species of Coprosma  previously treated as Coprosma foliosa  s.l.

1 Fruit reddish-orange, ovoid, lacking a central constriction between the two seeds, apex not depressed, calyx conspicuous or not (2)
- Fruit reddish-orange to yellow, cordate (heart-shaped) with a central constriction between the two seeds, apex depressed, calyx conspicuous and persistent, leeward East Maui Coprosma cordicarpa 
2 Fruit reddish-orange to yellow, fruit calyx conspicuous and persistent and >1.5 mm long, East and West Maui Coprosma stephanocarpa 
- Fruit reddish-orange to yellow, persistent fruit calyx not present or sometimes minute (<1.5 mm), Kaua‘i, O‘ahu, Moloka‘i, Lana‘i, West Maui Coprosma foliosa  s.l.