9-3 cm wide, elliptical or narrowly ovate, cuneate to rounded and sometimes short-decurrent
at base, flat or slightly revolute at margin, abruptly short-acuminate or obtuse and apiculate at apex, glabrous or bearing a few short appressed hairs abaxially near base, bearing 2 large raised glands on abaxial surface at base and occasionally 1 or 2 additional glands on abaxial surface above base, the glands rarely on decurrent
laminar tissue and appearing to be on apex of petiole, the principal lateral veins 4-6 on each side of midrib; petiole of larger leaves 7-14 mm long, very sparsely sericeous to soon glabrate, eglandular except for glands on decurrent
lamina (see above); stipules 0.
Leaflets show an acroscopic basal margin, rounded, not expanded, basiscopic decurrent
, and thick to very thick lamina.
2) [micro]m wide x 60-120(130) long, becoming shorter and wider towards apex and slightly shorter, wider and porose towards base; marginal cells similar to adjacent median lamina cells; alar cells rectangular to shortly rectangular, hyaline, strongly inflated, thin-walled, forming a very well delimited group, triangular or [+ or -] quadrate, usually excavate and decurrent
0 [micro]m long, thin-walled, becoming wider beside costa, shorter, wider and more flexuose towards apex, shorter, wider, thick-walled and porose towards base; marginal cells narrower than adjacent median lamina cells; alar cells rectangular, hyaline, inflated, thin-walled, forming a very well defined group, triangular, usually not reaching the costa (up to 70-90% of distance from leaf margin to costa), strongly excavate and broadly decurrent
, transition from alar cells to surrounding cells abrupt; initial cells of rhizoids very common in the upper third of leaves and beside costa, rhomboidal and hyaline.
Baldcypress, sweet gum, black gum, fir, spruce, pine, and other conical-shaped trees with an excurrent growth habit usually require less structural pruning than trees with a decurrent
growth habit (Figure 2-1).
Major branches 3-6, more or less erect, somewhat flattened, cream-colored below, beige or tan upward; branching dichotomous to sympodial throughout; branches in 4-7 ranks, more or less erect, substrict, beige or tan, flattened; hymenium unilateral, sterile areas decurrent
from axils; internodes diminishing gradually upward; axils rounded; apices awl-shaped to dichotomous, paler than branches ("chamois" to bone white at tips; 4B4).
Others have flattened scale leaves, such as the arbor-vitaes (Thuja, Cupressaceae) and the false cypresses (Chamaecyparis, Cupressaceae) or small awl-shaped leaves with a decurrent
base, such as the sugi or Japanese red cedar (Cryptomeria japonica, Taxodiaceae).
Effects of the flood of 1993 on the decurrent
false aster (Boltonia decurrens).
2 cm, fleshy, glabrous on both surfaces, venation obscure especially on the upper surface, formed by a midvein and two pairs of pinnate secondary veins, base decurrent
, apex obtuse.
We have presented the proportion covering the aerial parts of tree species respectively as excurrent crown and decurrent
crown for Common Cypresses and old Rubber trees .
Pore surface bright yellow to yellowish brownish upon bruising adnate to decurrent
pores rounded toangular 12 per mm tubes shorter near margins of pileus.
Leaves are alternate, sessile, scale-like, entire, sometimes decurrent
, from slightly auriculate to amplexicaul or even vaginate, glabrous, mostly with salt-secreting glands.