retuse


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retuse

[rə′tüs]
(botany)
Having a rounded apex with a slight, central notch.
References in periodicals archive ?
Bunchosia soejartoi is also distinguished by its rounded, often retuse leaf apices, few leaf glands, often sinuous abaxial leaf hairs, and stipules borne well above the base of the petiole.
LEAVES Commonly both retuse at Never retuse, apices apex and nearly as broad acute, emarginate, or broader than long in usually obtuse or obovate, elliptic or rounded; usually much ovate series, mature longer than broad.
Lip fused to the column base, 16-20 x 17-20 mm, ovate-quadrate to subrhombic when extended, retuse, undulated along the margins, the lateral margins upright forming a trumpet which embraces the column, multi-veined; callus formed by two short and parallel keels; spur formed by the lip base, prominent, sigmoid, 4050 mm long.
The dehiscent 2-winged fruit is nearly elliptical, with retuse apical margin.
Petals narrowly lanceolate, rounded and retuse at the apex, 18-20 mm long, each with a pair of basal appendages, cream tipped with white.
5-6 cm wide, basally truncate or rounded, apically obtuse or rounded, mucronate or retuse through the loss of the mucro, with revolute margins; hypophyllous glands very numerous, a few small to medium-sized glands per side near the base of the lamina 3-5 mm from the margin and with numerous (60-200) minute glands with a narrow circumvallation irregulary distributed in a zone 1-12 mm from the margin; midvein impressed above, (sub)prominent below, the lateral veins obscure on both surfaces or subprominent below.
5-5 x (4)5-6 mm, slightly rugose and forming discrete grooves along the main veins, base slightly or not constricted, apex obtuse to roundish or occasionally slightly retuse when flattened, margin smooth, completely yellow or with the margins reddish.
prostrata prophylls (Figure 1A) of two shoots that develop in the cotyledonary axils are not stipulate; they have green or dark red color, with obovate shape, obtuse or retuse apex, acute base, and entire and crenate margin only in the apical region.
2 cm long, curved outward, obtuse and slightly retuse at apex, light purple to lilac; ovary light green, 3-chambered, broadly 3-lobed, 10 mm long, 3.