Key to Myrtaceae
View taxon page for Myrtaceae
Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.
1. Fruit a
berry;
seeds often > 5 mm;
leaves generally
opposite 1. Arranged in pairs along an axis - e.g., two leaves per node. 2. Occurring in the same rank, directly above or below, as 'stamens opposite petals'. 3. Located directly across from.
(whorled).
2. Calyx lobes 1. A major expansion or bulge, such as on the margin of a leaf, sepal, or petal, or on the surface of an ovary. 2. The free tips of otherwise fused structures, such as sepals or petals; larger than teeth.
,
petals 5;
seed coat shiny, hard
..... [MYRTUS] 2' Calyx lobes, petals 4; seed coat
membranous 3. Ripe
fruit dark purple; seeds generally > 1,
lenticular; colyledons ± = embryonic
stem ..... [LUMA] 3' Ripe fruit red or purple; seed generally 1,
spheric;
cotyledons >> embryonic stem
..... [SYZYGIUM] 1' Fruit a
capsule or
nut; seeds generally 1–3 mm; mature leaves
alternate 1. Arranged singly, often spirally, along an axis - e.g., one leaf per node. 2. Occurring in different ranks, appearing to be between, not directly above or below, as 'stamens alternate petals'.
or opposite
4. Perianth parts
fused into
bud 1. An incompletely developed, more or less embryonic shoot, usually covered with bud scales. 2. An unopened flower, often protected by sepals.
cap in bud, shed at flower as a unit
..... EUCALYPTUS 4' Perianth parts
free in bud, each
segment persistent or falling separately
5. Flowers in a
dense cylindrical cluster surrounding stem at tip or just below;
stamens several × >
perianth ..... MELALEUCA 5' Flowers 1 or in small clusters, not surrounding stem; stamens <= perianth
6. Leaves opposite,
linear Elongate, with nearly parallel sides; narrower than elliptic or oblong.
or awl-shaped; fruit a 1-chambered nut;
style with ring of
hairs just below
stigma ..... [CHAMELAUCIUM] 6' Leaves alternate, oblanceolate to obovate-oblong; fruit a many-chambered capsule; style
glabrous ..... LEPTOSPERMUM
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