These plants also show apical pinnae with bases abruptly attenuate and not as decurrent
as the western South America collections (Figs.
, crowed, with two-sized lamellulae, margin even to eroded, concolor with the sides, consistency fleshy to coriaceous, white (1A1), pale grey (1B1) to greenish yellow (1C2).
Ventral leaf base shortly and narrowly decurrent
, the decurrent
part 1 cell wide ...
The evidence now favours them having been formed through branch abscission, especially since Lindsey (1915) described and illustrated two new specimens of Bothrodendron minutifolium, one showing a short stem bearing a mass of dichotomising leafy shoots that has a clean-cut, trumpet shaped base, the other showing a main axis bearing leafy branches that have similar decurrent
, trumpet-shaped bases.
Leaflets show an acroscopic basal margin, rounded, not expanded, basiscopic decurrent
, and thick to very thick lamina.
Stem leaves [+ or -] concave, either straight, oblong-ovate with abruptly acute or obtuse and apiculate or rounded apex, or falcate, ovate to oblong-ovate with gradually and shortly to longly acuminate apex; erect-spreading to imbricate, usually complanate; margin plane, entire or slightly denticulate near apex; costa short and double, occasionally absent; median lamina cells linear-flexuose, becoming shorter and wider towards apex and slightly shorter, wider and porose towards base; marginal cells similar or slightly shorter and wider than adjacent median lamina cells; alar cells numerous, hyaline, inflated, forming a well delimited group, slightly or longly decurrent
. Branch leaves narrower and smaller than stem leaves or only slightly smaller.
Stem leaves straight, concave, ovate, elongate-ovate or lingulate; [+ or -] erect and imbricate, sometimes spreading; margin plane, slightly recurved at base, entire; apex rounded or obtuse, cucullate; costa long and single (up to 80% of length leaf); median lamina cells linear, slightly incrassate, porose; marginal cells similar or narrower than adjacent median lamina cells; alar cells rectangular, shortly rectangular or quadrate, hyaline, [+ or -] inflated, [+ or -] thick-walled, forming a well delimited ovate or rectangular group along basal leaf margin, decurrent
; initial cells of rhizoids abundant near apex or beside nerve in upper part of leaves, rhomboidal and hyaline.
24) oblong, entire, imbricate, decurrent
, more or less spreading; costa pronounced, extending to the apex; walls of cells at leaf base thickened; alar cells (Fig.
5) Show the possible consequences of not pruning decurrent
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).
Report on basic life history characteristics of Boltonia decurrens (decurrent