lithophyte

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lithophyte

[′lith·ə‚fīt]
(ecology)
A plant that grows on rock.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Plants of the genus are terrestrial or lithophytic, rosetofilous; the leaves armed with spines or less often, finely serrulate, as short as 20 cm but usually longer and up to 1.5 m long; the inflorescences are lateral or terminal, racemose or more commonly paniculate, from 50 cm high and in some cases up to 2.5-3 m long, with numerous, minute (6-7.5 mm long) flowers; these mostly with white petals, more rarely petals bluish, lilac, green, red or yellowish.
Lithophytic rosulated, cespitose herbs to 1.7 m high, with conspicuous slender stolons, the mature rosettes zygomorphic; leaves 15-20 per rosette, sheaths white, lustrous on both surfaces, blades light green with purple marginal bands, narrowly triangular, densely lepidote abaxially; inflorescence lateral, erect; peduncle bracts foliaceous, 2-20 cm long, linear, attenuate and pungent, spiny at the margins; staminate inflorescences twice branched; pistillate inflorescences once branched; staminate flowers white, sessile; filaments in the male flowers 3.9-4.2 mm long, anthers yellow, 2-2.5 mm long, with a conspicuous apical acumen; pistillate flowers greenish white, sessile; sepals 3.5-4.3 mm long; petals narrowly triangular elliptic, 5.8-6 mm long.
Lithophytic rosulated herbs, to 2.3 m high; leaves glaucous, conic-cylindrical at the apex, sheaths pale brown on the adaxial surface, dark brown on the abaxial one; pistillate inflorescences twice branched; staminate inflorescences twice or thrice branched, with apparently fascicled racemes; staminate and pistillate flowers pale green coloured, filaments in the male flowers 3.2-3.5 mm long, anthers 4.2-4.5 mm long, green; capsules papyraceous, ovoid, ca.
2 Plants 2-4 m high, usually lithophytic; inflorescence branches (7)15-30, with a stipe 15-36 cm long, strongly curved; leaves 60-120 cm long; peduncle bracts not imbricate; petals 10.3-10.5 cm long....
Rosulate stemless lithophytic or very rarely epiphytic herbs, flowering 2-4 m tall, with solitary tank rosettes to 1.7 m in diameter.