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  • 크라술라 엘레강스 나미비엔시스-crassula elegans subsp. namibiensis
    식물/들꽃-돌나물과(Crassulaceae) 2018. 3. 10. 14:39

    크라술라 엘레강스 나미비엔시스

    crassula elegans subsp. namibiensis

    국표에는 없다.

    Origin and Habitat: Southern Namibia.
    Altitude: 20–300 metres above sea level.
    Habitat: This species grows scattered but widespread from between 6 and 12 sub-populations and locations, mainly in gentle to moderate south- and east-facing rocky slopes or on well-drained gravel plains both in rock crevices and sand among sandstone, granite or pegmatite gravel. It is usually found in exposed positions in full sun or in partial shade along with other dwarf succulent species like Adromiscbus nanus, Lithops and Tylecodon species. They have brownish leaves and closely mimics the rocks on which they grow and are lost to sight in this environment, this camouflage allows them to escape detection and is a very effective strategy for escaping predation.

    Description: Crassula elegans subsp. namibensis is the Namibian form of the very variable Crassula elegans. It distinguishes for the leaves that are ovate with obtuse apices, glabrous and covered with papillae. It is quite variable and several different looking forms are available under this name.
    Habit: It is a sprawling, perennial, leaf-succulent, up to 80 mm tall, with tough, slightly woody base.
    Stems: Short, wiry, much branched.
    Roots: Shallow and short. The root/shoot ratio is low during time of drought, but upon wetting of the soil the plant rapidly forms adventitious, deciduous rootlets which temporarily increase the root/shoot ratio.
    Leaves: Ovate, 5–15 mm long and 4–8 mm broad, apices obtuse, broadly triangular in section, closely packed so that internodes are usually not visible, glabrous, covered with papillae, green to brownish red to deep red in full sun.
    Inflorescence: It produces loose rounded thyrse at the stem apex with peduncle (15-)25-60 mm long, covered with recurved hairs.
    Flowers: Inconspicuous, very small, tubular, white, cream, beige or yellowish often fading to brown, slightly perfumed. Petals basally fused. Stamens with brown anthers.
    Blooming season: Autumn or winter

    http://www.llifle.com/Encyclopedia/SUCCULENTS/Family/Crassulaceae/25635/Crassula_elegans_subs._namibensis















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