Ptychosperma macarthurii

 

학명 : Ptychosperma macarthurii (H.Wendl. ex H.J.Veitch) H.Wendl. ex Hook.f.

분류 : 야자나무과(Arecaceae)

학명 풀이

Ptychosperma :   From the Greek ptyche (fold) and sperma (seed)

 

Common Name : Macarthur palm

중국어명 : 馬氏射葉椰子

 

 

사진  : 2023.01.31 대전한밭수목원

 

 

 

 

 

 

 

아래 : 2023.02.15 서울식물원

 

 

 

 

 

아래 : 2023.03.09 부천수피아식물원

 

 

 

 

 

 

 

 

 

 

 

 

Palmpedia 설명

 

Stems grow in dense clumps or rarely solitary, up to 7 m tall, only 7 cm in diameter, thus appearing bamboo-like. Leaves are up to 2 m long or more, compound. Leaflets are 23-28 on each side, more or less regularly arranged, with margins nearly parallel or tapered at the tip. Inflorescence are up to 60 cm wide. Male flowers are 6-8 mm long, with 26-40 stamens. Fruit is red, ovoid, 12-16 mm long. Seeds are deeply 3-6-grooved. (Dr.s Kenneth Greby, Yazdy Palia, Satish Pardeshi.) Editing by edric.

 

Stems: Clustering, each stem with 8-10 leaves, slender, light gray stems to 8 m tall and up to 3-10 cm in diameter, with widely spaced, ridged leaf scar rings. Leaves: Pinnate, reduplicate, 1-2 m long, with a slightly arching rachis holding drooping, regularly arranged leaflets in a single plane. The crown shaft is about 50-60 cm long, somewhat swollen at the base, and light green with a waxy white coating. Leaflets are green above and below, widest toward the middle or wedge-shaped, prominent midribs with brown or tan twisted ramenta on the underside. Leaflet tips are truncated and jagged (praemorse). Flowers and fruits: Inflorescence is pendulous, to 60 cm long and with yellowish branches. White male and female flowers are borne on the same inflorescence. The ovoid, red fruits are 1-1.5 cm long and have remnants of the stigma at the apex. (lucidcentral.org)

 

Macarthur Palm has stems cespitose (Growing in tufts or clumps) or rarely solitary, to 7 m high, 7 cm in diameter with leaves to 2 m long or more. The pinnae is 23-28 on each side, more or less regularly arranged, obliquely praemorse, with margins nearly parallel or tapered apically. Flowering is seasonal and begins in October or November but can be earlier and later depending on conditions and plant health. Inflorescence is up to 60 cm wide with staminate flowers 6-8 mm long and 26-40 stamens. The brilliant red fruit begin to ripen in January mostly, appearing until April. The fruit is red, ovoid, 12-16 mm long with seeds deeply (3-) 6-grooved with homogeneous endosperm. (Essig, F.B. 1978. A Revision of the Genus Ptychosperma Labill, Arecaceae.

 

Palmpedia의 열매 사진

 

 

 

 

 

 

https://www.palmpedia.net/wiki/Ptychosperma_macarthurii

 

 

Wikipedia  설명

Ptychosperma macarthurii, commonly known as the Macarthur palm, is a species of tree in the palm family Arecaceae. Its native range is northern Cape York Peninsula in Queensland with a number of disjunct populations in the Northern Territory and New Guinea.[3] The species has been widely planted in tropical areas[4] and is commonly grown as an indoor plant.[5]

 

Description

P. macarthurii is a clumping (multi-stemmed) palm growing to a height of 10 m (33 ft). The slender stems measure up to 10 cm (3.9 in) in diameter and have prominent leaf scars encircling the trunk. They are green in the younger sections of the trunk just below the crownshaft, but may be greyish lower down.[2][6][7]

 

The crown consists of between 3 to 13 paripinnate fronds to 3 m (9.8 ft) in length, with 15-40 pinnae (leaflets) on either side of the rachis (midrib), and have a crownshaft which measures about 70 cm (28 in) long.[6][7]

 

The leaflets measure up to 56 cm (22 in) in length, are regularly or irregularly arranged (often clustered), with nearly parallel margins and a truncated tip. They are mid green on the upper surface and lighter below.[6][7]

 

The inflorescences are up to 45 cm (18 in) long and branched 2 to 3 times.[7] Flowers are grouped in sets of 3, each with one pistillate (functionally female) set between two staminate (functionally male) flowers.[2][4] They are yellow-green to light-green with 3 sepals and 3 petals; staminate flowers are 7 mm (0.28 in) long by 4 mm (0.16 in) wide with 23-40 stamens,[2][4][6] pistilate flowers measure about 5 mm (0.20 in) and have 3-6 staminodes and a 0.5 mm (0.020 in) recurved stigma.[2][4]

 

Fruits of Ptychosperma macarthurii measure up to 18 mm (0.71 in) long and 12 mm (0.47 in) wide, are bright red when ripe and the remains of the stigma is attached at one end.[2][6][7] There is a thin layer of flesh around the solitary seed, which is about 12 mm (0.47 in) long with five deep longitudinal grooves.[2][4][7]

 

https://en.wikipedia.org/wiki/Ptychosperma_macarthurii

 

아래는 소엽 모습 사진

 

사진 출처 111020112443.jpg (800×600) (efloraofindia.com)

 

 

 

종자 퍼온 사진

 

 

속명 Ptychosperma의 뜻은 Folded Seeds

 사진 출처 : https://www.rarepalmseeds.com/ptychosperma-macarthurii