Most bromeliads belong to the phytotelm type with rosulate
ramets (spiny rosette-forming plants) where enough leaf litter and rainwater accumulate to support a varied fauna, including small amphibians, arachnids and insects (DEJEAN; OLMSTED, 1997; DIAS; BRESCOVIT, 2004; LAESSLE, 1961; WHEELER, 1921, 1942; WITTMAN, 2000).
It is obvious that the "herbaceous habit" also include nidiform, calathiform, rosulate
, and scandent corms, but these forms are uncommon or not found in Blechnum.
Leaves 17 to 20 in number, coriaceous, densely rosulate
, suberect, forming a funnelform rosette; sheaths ovate, 12-17 x 9.5-10 cm, inconspicuously lepidote, green toward the apex, strongly coriaceous; blades narrowly subtriangular-lanceolate, not narrowed at the base, 15-24 x 5-6 cm, green, inconspicously and sparsely white-lepidote mainly adaxially to glabrous, nerved, suberect with recurved apex, apex acuminate.
2 C-D) is a saxicolous plant with rosulate
leaves, 60 cm long, 2 cm wide.
Leaves radical as well as cauline; radical ones rosulate
, linear to oblong-oblanceolate, 5-10 X 0.5-1.5 cm, entire-crenate, cormate at base, slightly reflexed at margins, single veined, acute; cauline leaves, opposite decussate, smaller, in pairs, linear-oblong, 2-5 X 0.3-0.6cm, entire, acute, reflexed at margins, each pair connate at base and forming a 0.4-1.0 cm long tube.
- Pink sundews are small, rosulate
, evergreen, perennial, insectivorous forbs, common in wet savannas, bogs and ditches in the coastal plain of the southeastern USA (Schnell, 1976).
For each species the following characteristics were determined: physical habitat (terrestrial or epipetric), ecological habit (transient or resident) and the biological forms: herbaceous (erect, rhizomatous, creeping, rosulate
, and caespitose), shrubby (erect, scandent and rosulate
), arboreal, climber, and accidental herbaceous (rosulate
), according to Mueller-Dombois & Ellenberg (1974).
Other frequent species within this vegetation-type are the succulent halophytes Arthrocnemum macrostachyum and Limbarda crithmoides; the rosulate
hemicriptophytes Limonium cossonianum, Limonium caesium, and Limonium santapolense, and other halophytes such as Halimione portulacoides or Frankenia corymbosa.
Plant saxicolous, rosulate
herb, forming large colonies, flowering 0.80-1.8 m tall, the rosettes zygomorphic in mature plants, 30--90 cm long.
Leaves alternate to rarely opposite, rosulate
, clustered at the branch apices to clustered in the axils of the old leaves; petiolate, sessile to sheathing at the base; blades entire, lyrate, pinnatisect to pinnately compound, unarmed to spiny, pinnately, palmately to three-veined, rarely parallel-veined, glabrous to pubescent.
nivalis, such as habitat (from areas above the tree line usually at altitudes well above 2000 m a.s.), growth habit (rosulate
herbs < 10 cm in height, with well-developed rhizomes), leaf morphology (leaves < 10 cm long, with pinnatifid to pinnate blades) and floral morphology (flowers axillary, erect and solitary; sepals reduced and inconspicuous; corollas white, half to full spreading; nectar scales contrastingly coloured yellow to orange, with three dorsoventrally flattened dorsal threads, attached to the distal-most third of the scale's back).
Leaves 15 to 18 in number, subspreading-arcuate to distinctly recurved, densely rosulate
and forming a distinct rosette before the anthesis and afterwards; sheaths inconspicuous; blades narrowly triangular, long attenuate-caudate, 30-58 cm long, 3-4.5 cm wide at base, ca.