2007; Kluge and Kessler, 2007): (1) laminar dissection (LD), 1 = simple, 2 = pinnate, 3 = bipinnate
or more; (2) density of indumenta--hairs and/or scales leaf present, determined on the adaxial (ADLS) and the abaxial (ABLS) surfaces, classifying each species qualitatively into the following categories: 1 = leaf surface without trichomes, 2 = 1-10% of the leaf surface covered, 3 = 11-25%, 4 = 26-50%, 5 = 51-75%, 6 = 76-100% of the leaf surface covered with indument, (3) stomatal density (SD), determined by counting and averaging the number of stomata in 1 [mm.
Inflorescence shortly paniculate, densely bipinnate
, 22-30 cm long (including the terminal branch), 11-13 cm in diameter, erect, rachis nearly straight, green, glabrous, 0.
Mesquite is a versatile desert denizen with the feathery, bipinnate
foliage characteristic of leguminous, self-fertilizing trees.
Like Macroneuropteris macrophylla, Macroneuropteris scheuchzeri comprises a petiole more than one metre in length, which dichotomises near the base to produce two large bipinnate
Mean number of leaves, or leaflets for bipinnate
species, and branchlets per branch was obtained from the three samples of each species.
0 cm long, broadly triangular, bipinnate
to tripinnate; fertile stalk arising from base of blade or base of petiole; sporangia on branching segments at upper end of fertile stalk.
The normal leaf is bipinnate
, but some species are leafless.
to inconspicuously tripinnate at base, cylindrical, erect, 13-21 (-30) cm long, fascicles subdensely (toward the base) to densely (near the apex) arranged, 1-3 cm apart, bearing 3 to 5 fascicles densely aggregated at extreme apex, rachis 0.
Distinguishing features: The bipinnate
Suggestions are offered as to how the many foliar forms fit into the bipinnate
frond of Laveine and Brousmiche (1982).
They are sparse plants, with the bipinnate
leaves and small leaflets of many leguminous species.