타이퉁소철
https://daehyo49.tistory.com/7815922
학명 : Cycas taitungensis C. F. Shen et al.
분류 : 소철과(Cycadacae)
유통명 : 타이퉁소철(식물원 소개)
국표식 등재명 : 없음
Common Names: Emperor Sago; Prince Sago; Tongue Tied Sago Palm
중국어명 : 台东苏铁(태동소철)
사진 : 2024.02.02 수원일월수목원
FOC
Cycas taitungensis C. F. Shen et al., Bot. Bull. Acad. Sin. 35: 135. 1994.
台东苏铁 tai dong su tie
Trunk sometimes branched, to 5 m × 45 cm, apex very tomentose; bark black, scaly. Leaves to 50 or more, 1-pinnate, (1.1-)1.3-1.6(-2) m × 20-30(-40) cm; petiole (10-)15-25 (-30) cm, subtetragonal in cross section, with 7-14 spines along each side; leaf blade oblong, strongly "V"-shaped in cross section, recurved, densely orange-brown tomentose when young; leaflets in 130-200 pairs, horizontally inserted at 55-65° above rachis, straight to subfalcate, not glaucous when mature, 14-20 cm × 5-8 mm, leathery, sparsely pubescent abaxially, base decurrent, margin flat or slightly recurved, apex attenuate, pungent. Cataphylls triangular, 4-7 × 1.7-2.5 cm, densely pale brown tomentose, apex pungent. Pollen cones ovoid-cylindric, 45-55 × 8-13 cm; microsporophylls narrowly obtriangular, 3.5-4.5 × 1.1-1.5 cm, apex cuspidate. Megasporophylls bright orange-red, spadelike, 15-28 cm, pale brown tomentose, glabrescent; stalk 8-17 cm; sterile blade suborbicular or rhombic-orbicular, 7-14 × 6-11 cm, pectinate, with 29-39 lobes 2-4.5 cm; ovules 2(or 3) on each side of stalk, densely pale brown tomentose. Seeds 2-6, orange-red, narrowly obovoid or subellipsoid, 4-5 × 2.5-3.3 cm, often with remnant hairs; sclerotesta with 2 or 3 irregular grooves on each side. Pollination Apr-Jun, seed maturity Sep-Oct.
* Mixed, sparse forests in exposed sites on rocky and steep slopes or well-drained gravel; (300-)400-800(-1000) m. Taiwan (Taidong Xian)
Plants now treated as Cycas taitungensis were formerly misidentified as C. taiwaniana, a species occurring in Guangdong, E Guangxi, SW Hunan, SE Yunnan, and possibly Vietnam.
기타 설명
Cycas taitungensis
Common Name(s): Emperor Sago; Prince Sago; Tongue Tied Sago Palm
Phonetic Spelling
SY-kas tay-tung-EN-sis
This plant has high severity poison characteristics.
See below
Description
Emperor sago is a member of an ancient family known as Cycadaceae that dates back more than 200 million years ago. It is a tropical to a subtropical broadleaf evergreen that is related to conifers. It is a rare plant and was placed on the endangered species list in 2010. The genus name, Cycas, is derived from the Greek word, "kykas." This word is thought to be a transcription error for the word, "koikas," meaning Palm tree. Although Emperor Sago has a palm-like appearance, it does not flower and is cone-bearing, like a conifer.
Emperor sago is closely related to the sago palm, but it does not have the rolled-back leaflet margins that are found on the Sago Palm. Emperor Sago is slightly more cold-hardy and can have a leaf spread of 10 feet wide. Although slow-growing and long-living, Emperor Sago is the fastest growing in the cycad family under optimal conditions. Both of these plants are dioecious which means there must be a female and male plant to reproduce. They reproduce by using exposed seeds (gymnosperms), much like pines and fir trees.
Emperor sago prefers full sun to partial shade. The leaves tend to bleach out when in full sun; therefore, protection from the afternoon sun is recommended. They are intolerant to alkaline soils. They require good drainage, but once they are established they may tolerate dry spells. The plant is cold tolerant and can survive temperatures as low as 15 degrees Fahrenheit. Maintenance of emperor sago is minimal and includes removing suckers or offshoots and removing spent fronds. They are propagated by seeds or offshoots. By using the offshoots, you will know the sex of the plant immediately.
The trunk of emperor sago is sometimes branched and can have a width of 18 inches. The stem color is reddish-brown. The crown is rounded and the leaves may spread out up to 10 feet. They can be 50 or more dark green leaves that are palm-like and measure 40 to 70 inches long and 8 to 12 inches wide. Each leaf is divided into 130-200 pairs of leaflets. The leaflets are leathery, and the margins are flat. On the male emperor sago, pineapple-shaped cones are produced. On the female, the cones are shaped like a flat ring and form a thickly packed seedhead. The seeds are orange to red in color. Pollination occurs from April to June with the assistance of insects or the wind. The seeds mature from September to October.
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