A few nice oriental sword images I found:
Echinodorus cordifolius ( L. ) Griseb ‘s flower close up … Chụp gần, hoa của cây Từ Cô lá tim ….
Image by Vietnam Plants & America plants
Vietnamese : Từ Cô lá tim, Từ cô kiểng
English names : Spade Leaf Sword, Creeping burrhead
Scientist name : Echinodorus cordifolius (L.)Griseb
Synonyms : E. radicans (Nuttall) Engelmann; Alisma cordifolia Linnaeus
Family : Alismataceae. Họ Từ Cô
Searched from :
**** CÂY CẢNH VIETNAM : TÙNG LÂM GARDEN
CÂY THỦY SINH
Từ cô lá tim: Echinodorus cordifolius (L.) Griseb- Họ : Alismataceae
Khi trưởng thành, cây có chiều cao từ 40-60cm. Lá có màu xanh sáng, bóng, hình ovan hơi tròn, chóp nhọn hình mác, đáy hình tim, dài 10-12cm, rộng 7-9 cm. Lá tròn và rộng hơn khi sống chìm dưới nước. Hoa : tụ tán trên 1 phát hoa dài 60-80cm, phát hoa có khoảng 3-9 vòng hoa, mỗi vòng hoa có từ 3-15 chiếc. Hoa màu trắng với 3 cánh hoa rời. Cây thích hợp đất với nhiều mùn và có thể chịu bóng một phần với độ sâu tối đa khoảng 15cm.
Spade Leaf Sword, Creeping burhead
E. radicans (Nuttall) Engelmann; Alisma cordifolia Linnaeus, Sp. Pl. 1: 343. 1753
Found in wetlands in Mexico and North America In USA it occurs in the southeastern states, to Virginia, Illinois and Texas. It is also found in Mexico and the northern states of South America.
Found in marshes, swamps and ponds. Blooms in the late summer to early fall.
Herbs, perennial, stout, to 100 cm; rhizomes present. Leaves emersed, submersed leaves mostly absent; petiole 5–6-ridged, 17.5–45 cm; blade with translucent markings distinct lines, ovate to elliptic, 6.5–32 ´ 2.5–19.1 cm, base truncate to cordate. Inflorescences racemes, of 3–9 whorls, each 3–15-flowered, decumbent to arching, to 62 ´ 8–18 cm, often proliferating; peduncles terete, 35–56 cm; rachis triangular; bracts distinct, subulate, 10–21 mm, coarse, margins coarse; pedicels erect to ascending, 2.1–7.5 cm. Flowers to 25 mm wide; sepals spreading, 10–12-veined, veins papillate; petals not clawed; stamens 22; anthers versatile; pistils 200–250. Fruits oblanceolate, plump, 3–4-ribbed, abaxially 1-keeled, 2–3.5 ´ 0.9–1.5 mm; glands 3–4; beak terminal,1–1.3 mm. 2n = 22.
Echinodorus cordifolius is very easily determined, as it is the only species with arching to decumbent inflorescences. In addition, it is the only one with papillate veins on the sepals.
Easily cultivated in neutral to soft water and tropical to sub-tropical temperatures. Rich substrate and good light. Common in the cultivated aquarium trade.
Emersed plants readily produce flowers and seeds but it can be grown submersed as well. Most plants sold are grown emersed on plant farms. Once submerged, leaves may die off before underwater leaves develop. In the aquarium grow in the background as a specimen plant. Will soon outgrow a smaller aquarium but removing the floating leaves will help keep it smaller and submerse. Needs a large, deep aquarium to grow properly. CO2 infusion helps stronger growth. A heavy feeder and for optimum growth a rich substrate is needed, including clay. If grown emerse it is prone to attacks by aphids. Not fussy as to water conditions, tropical aquarium temperatures. Can be grown outdoors in warmer countries, won’t tolerate frost. Likes a lot of light.
Can be grown in or by the pond in warmer climes. The seeds can be sown in shallow water.
Tropica Marble, Marble Queen has an attractive marbled leaf surface which tends to be lost in low light conditions. Tends to remain as a submerged plant longer than the type plant. Likes good substrate, CO2 and a strong light. Cultivated by Oriental Aquarium in Singapore.
ovalis is a small, orbiculate plant whose low, wide growth makes it suitable for small aquariums. Reaches a height of about 35cm with a width of about 30 cm.
ssp. fluitans is fast-growing, suitable for large aquariums. Less likely to grow up above the water surface. If it grows large enough, it forms large leaves just under the surface instead. Reaches a height of about 40cm.
The Mud King : Echinodorus cordifolius, Tropical Fish Hobbyist, October 2007, vol LVI (2) #619
**** USDA PLANTS PROFILE
**** WILDFLOWER ORG.
Image by A.D. Isaac
As in Europe, Indians of high birth carried ornamented swords as a mark of rank. These exquisite blades have scabbards covered with velvet. The handles are probably made from elephant ivory, if I had to guess. The lighting in the Oriental arms area was absolutely horrible for photograhpy, and the unfortunate consequence of this is that the image is somewhat muddy.