Aglaia species group

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Aglaia species group

Distribution

Pacific: Fiji (Fiji endemic), from India to New Guinea and Australia present
Aglaia tomentosa is widespread and occurs from India to New Guinea and Australia. Two species of this group are endemic to Fiji (A. archboldiana A.C. Smith and A. fragilis A.C.Smith).

Taxonomy

The species of this group are closely related.

They have reddish-brown stellate hairs which, in some species in the group, are numerous on the lower surface of the leaflets with the arms of adjacent hairs overlapping to form a continuous indumentum on that surface of the leaflets; in other species the hairs are mainly on the midrib or they are numerous on the lower surface but the arms do not overlap.
The hairs are interspersed with smaller, paler, stellate hairs or, sometimes, scales.
The species are separated on leaflet number, shape, hair structure and density of in- dumentum, correlated in some species with either flower or fruit characters.
Aglaia tomentosa has the greatest variation in leaflet number, size and the density of indumentum.
The staminal tube is usually cup-shaped and the anthers protrude beyond the aperture; it is sometimes subglobose with a small apical pore.
Aglaia angustifolia has numerous (13–21) very long, narrow leaflets with indumentum like that of A. tomentosa.
In A. rufibarbis the leaflets are large and obovate, the hairs are present on both leaflet surfaces and have arms up to 4 mm or even 6 mm long.
The staminal tube in A. rufibar- bis is obovoid with a minute apical pore and the anthers are included.
The arms of the hairs in A. cuspidata are also up to 4 mm long, whereas they rarely exceed 1 mm in the other species.
The leaflets of A. hiernii have a more dense, darker indumentum than the other species and the calyx is usually glabrous.
In A. palembanica the indumentum on leaves and fruits is sparse, while the number of leaflets in A. exstipulata is greater than in most other members of this group.
Aglaia exstipulata is sometimes difficult to distinguish from A. rufinervis; this species and A. tenuicaulis are also related to A. tomentosa.