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Chart illustrating leaf morphology terms. The following terms are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (that is, the leaf blade or 'lamina' is undivided) or compound (that is, the leaf blade is divided into two or more leaflets). [1]
The flowers are 15–25 mm (5 ⁄ 8 –1 in) diameter, with five rounded petals, white fading to pale pink, with a more or less irregularly notched margin; they are slightly fragrant, borne in three to four-flowered umbels, with short, thick peduncles, and appear before the leaves in mid to late spring. The flower stalks are slender and dark red.
Ourisia glandulosa is morphologically most similar to another New Zealand small-leaved species, O. caespitosa, as both species are prostrate plants with tightly packed, often irregularly notched leaves and with flowers single or in pairs at each node (not whorled).
Leaf blades are 4.0–14.9 mm long by 4.6–12.3 mm wide (length: width ratio 0.8–1.1: 1), very broadly ovate or circular, widest at or below the middle, with a rounded apex, truncate or slightly cordate base and smooth or irregularly notched edges. Leaves are mostly glabrous (hairless), rarely with a few non-glandular hairs on the upper ...
Ourisia caespitosa can be distinguished from all other New Zealand species of Ourisia by its mostly glabrous aspect, trilobed or irregularly notched leaves that are tightly packed along the creeping stem. [5] [7] Ourisia caespitosa is morphologically most similar to another New Zealand species, O. glandulosa.
The leaves are in fascicles of three, [6] needle-like, yellow-green, twisted, and 9–15 centimeters (3 + 1 ⁄ 2 –6 in) long. The cones are resin-sealed and irregularly shaped, [4] 8–16 cm (3 + 1 ⁄ 4 – 6 + 1 ⁄ 4 in) long and clustered in whorls of three to six on the branches. The scales end in a short stout prickle.
The stems are creeping, with opposite leaves that are tightly tufted along the horizontal stem. Leaf petioles are 34.5–150.0 mm long. Leaf blades are 12.3–135.1 mm long by 7.4–71.4 mm wide (length: width ratio 1.0–1.7: 1), broadly to very broadly ovate, widest below the middle, with an acute apex; rounded or cordate base; and regularly ...
Used for leaf fungus that live on the surface of the leaf. Epiphloedal – growing on the bark of trees. Epiphloedic – an organism that grows on the bark of trees. Epiphyllous – growing on the leaves. For example, Helwingia japonica has epiphyllous flowers (ones that form on the leaves). [5] Epiphyte – growing on another organism but not ...