bio.wikisort.org - Plant

Eucomis amaryllidifolia is a species of flowering plant in the family Asparagaceae, subfamily Scilloideae, native to the Cape Provinces.[1] It is a short, summer-flowering bulbous plant, with a dense spike (raceme) of yellowish-green flowers topped by a "head" of leafy bracts. In Afrikaans it is called kliplelie ('rock lily').[2]

Eucomis amaryllidifolia
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Order:	Asparagales
Family:	Asparagaceae
Subfamily:	Scilloideae
Genus:	Eucomis
Species:	E. amaryllidifolia
Binomial name
Eucomis amaryllidifolia Baker[1]
Synonyms[1]
Eucomis autumnalis subsp. amaryllidifolia (Baker) Reyneke

Description

Eucomis amaryllidifolia is a short summer-growing bulbous plant, 9–20 cm (3+1⁄2–8 in) tall. Its bulb is more or less spherical, 3–4 cm (1+1⁄8–1+5⁄8 in) across, with a dark brown outer tunic. Five or six leaves emerge from the bulb, 13–30 cm (5–12 in) long and 1.5–4 cm (5⁄8–1+5⁄8 in) across. The margins of the leaves are wavy. The inflorescence is a densely packed raceme with 30–50 individual flowers. The raceme is topped by a head or "coma" formed from 13 to 20 bracts about 3 cm (1+1⁄8 in) long. The somewhat sweetly scented flowers have six yellowish green tepals, 6–8 mm (1⁄4–5⁄16 in) long by 4–5 mm (5⁄32–3⁄16 in) wide. The ovary is greenish yellow. The seeds are glossy and black.[2]

It flowers in summer and early autumn (January to March in its native South Africa).[2]

Taxonomy

Eucomis amaryllidifolia was first described by John Gilbert Baker in 1878.[1] He referred to the leaves as "Amaryllis-like" in contrast with the broader leaves of E. undulata (now a synonym of E. autumnalis), which it otherwise resembled.[3] In 1972, William Frederick Reyneke considered the species to be merely a variety of E. autumnalis, but then, in 1980, elevated it to a subspecies, as E. autumnalis subsp. amaryllidifolia. However, later research showed that E. amaryllidifolia was one of the smaller diploid species of Eucomis, with 2n = 2x = 30, whereas E. autumnalis was one of the larger tetraploid species, with 2n = 4x = 60. Accordingly, E. amaryllidifolia is now accepted as a full species.[2]

Distribution and habitat

Eucomis amaryllidifolia is native to the Cape Provinces of South Africa, and in particular the Eastern Cape,[2] possibly extending into the Orange Free State.[4] It grows on rocky slopes and ridges, in full sun.[2]

Cultivation

Eucomis amaryllidifolia was not in general cultivation as of October 2018^[update]. In the Kirstenbosch National Botanical Garden, it is grown in pots in an open, slightly acid medium. The pots are placed in a sunny position and watered well in summer, but kept completely dry in winter. A high potash fertilizer is used. The bulbs are considered to be hardy down to −5 °C (23 °F). Propagation is by seed, bulb slicing, leaf cuttings and tissue culture. Mealybugs can be a significant pest.[2]

References

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