with a neck; exothecial cells thick- to thin-walled; stomata restricted to neck, consisting of a slit in a rounded guard cell, superficial or immersed
6 KB (465 words) - 22:25, 5 November 2020
distinct apiculus of a single cell; costa sometimes poorly differentiated, sometimes not reaching the leaf insertion; laminal cells with thick longitudinal walls
5 KB (320 words) - 22:24, 5 November 2020
smooth or roughened; axillary hairs usually 5 cells, basal cells 1 or 2, short, walls brown, apical cell elongate, hyaline. Leaves radially arranged or
5 KB (486 words) - 22:34, 5 November 2020
surface protrudes slightly outward. A mammillose cell can be difficult to distinguish from a 1-papillose cell; both have a single hollow protuberance, but
26 KB (1,714 words) - 22:26, 5 November 2020
enlarged, thin-walled cells; cells in outer layer aporose or with single round to elliptical wall thinning adjacent to the distal cell wall, visible only
8 KB (399 words) - 22:27, 5 November 2020
unusual color of the sap in cells of the leaf base. These cells tend to be green, rarely evenly pink or red, but the cell sap is colored, often a bright
8 KB (360 words) - 22:34, 5 November 2020
weakly sinuate; alar cells transversely elongate, quadrate, or short-rectangular; proximal laminal cells similar to medial cells, usually shorter, 1–4:1
6 KB (444 words) - 22:36, 5 November 2020
length. Blade ovate or oblong to lanceolate, simple to decompound, usually 1 cell thick between veins (except Trichomanes membranaceum Linnaeus), entire or
5 KB (452 words) - 21:24, 5 November 2020
insertion on abaxial side; axillary hairs minute, 2–3 cells in length, basal cell small, apical cell enlarged, ± clavate; paraphyllia none; pseudoparaphyllia
5 KB (485 words) - 22:27, 5 November 2020
2-fid, usually solid, with 3–5 projections, occasionally absent or multiplex, cell walls thin to thick, lumens sometimes angular, occasionally trigonous (D
20 KB (1,075 words) - 22:28, 5 November 2020
abaxial stem surface, smooth [or papillose]; axillary hair basal cell 1, brown, apical cells 3–6, hyaline. Leaves erect to wide-spreading, usually imbricate
5 KB (474 words) - 22:37, 5 November 2020
multistratose apiculus; basal cells rectangular, with straight or sinuose and thin to thick cell walls; mid leaf and distal cells quadrate, rectangular, or
18 KB (854 words) - 22:25, 5 November 2020
rounded-obtuse; costa single, strong, usually ending before apex; distal laminal cells rounded-hexagonal to rectangular, smooth or mammillose. Seta slender, usually
3 KB (200 words) - 22:34, 5 November 2020
long, or double and usually short; alar cells differentiated or not, sometimes inflated; medial laminal cells linear or short-linear, rarely rectangular
15 KB (704 words) - 22:35, 5 November 2020
sclerodermis absent, central strand absent; axillary hairs to ca. 5 cells in length, proximal cell walls sometimes thickened. Stem leaves strongly appressed and
5 KB (554 words) - 22:29, 5 November 2020
smooth; basal cell walls with few pits or rarely pitted to mid leaf; medial and distal cells linear, linear-flexuose, or sometimes linear-rhomboidal, heavily
4 KB (490 words) - 22:37, 5 November 2020
[filamentous]; ± radiculose; axillary hairs of 2–several cells, basal cell small, brown, distal cell elongate, hyaline. Secondary stems spreading, suberect
5 KB (445 words) - 22:35, 5 November 2020
lacking wavy ridges (present only in D. purpusii), cells brick-shaped (less than 3 times longer than wide), cell margins undulate or straight. North America,
6 KB (294 words) - 22:46, 5 November 2020
2–6(–7)-celled. Stem leaves ovate; margins plane, reflexed, or revolute, papillose-serrulate proximally, often serrulate distally by projecting cell ends;
5 KB (436 words) - 22:36, 5 November 2020
rounded to insertion; margins often irregularly serrulate at apex; laminal cell abaxial and adaxial surfaces plane to somewhat domed, usually 1-papillose
4 KB (278 words) - 22:34, 5 November 2020