Opuntia lasiacantha Pfeiffer Enum Cact 160

1837-

Opuntia megacantha lasiacantha Berger, Bot. Fig. 221.—Opuntia spinulifera. X0.4.

Jahrb. Engler 36: 453. 1905.

A tall plant, with a more or less definite trunk; joints obovate to oblong, 20 to 30 cm. long; leaves short, red; areoles small, 2 to 3 cm. apart; spines usually 1 to 3, acicular, white, 2 to 4 cm. long, slightly spreading; glochids numerous, prominent, dirty yellow to brown; flowers large, yellow or deep orange, 6 to 8 cm. broad; ovary bearing long, brown, deciduous bristles, especially from the upper areoles; style pinkish; stigma-lobes pale green.

Type locality: In Mexico.

Distribution: Central Mexico.

Schumann refers O. lasiacantha to O. robusta, but wrongly, as Berger states, and as living plants show. Pfeiffer said it is near O. candelabriformis, here taken up under O. spinulifera.

This species is very variable and, while it seems distinct from O. megacantha, it is to be noted that Mr. Berger referred it to that species as a variety.

Opuntia chaetocarpa Griffiths (Proc. Biol. Soc. Washington 27: 25. 1914), in its few long white spines, resembles plants collected by Dr. Rose in southern Mexico which we have referred to this species.

Illustration: Addisonia 3: pl. 90.

Plate xxxiv, figure 3, represents a flowering joint of a plant collected by Dr. Rose near the City of Mexico in 1906. Figure 222 represents a joint of a plant collected by Dr. Mac-Dougal and Dr. Rose at Tehuacan, Mexico, in 1906.

Opuntia zacuapanensis Berger, Hort. Mortol. 413. 1912.

"A fine new species with bright-orange flowers. We received this plant a few years ago from M. L. Puteaux, Versailles, as Opuntia spec. from Zacuapan.* Joints 13 to 20 cm. long and 9.5 cm. broad, obovate, smooth, glossy green, areoles 15 to 25 mm. distant, slightly elevated, small, roundish or obovate. Spicules yellow, short, not numerous. Spines generally two, white, with yellowish points and base, terete, the lower deflexed shorter, the upper one spreading (2-) 3 cm. long. Flowers numerous from the top of the joint, 7.5 cm. long and 6.5 cm. broad, ovary obovate turbinate, 3.5 to 4 cm. long and 22 mm. broad, areoles somewhat elevated, prickly; petals obovate lanceolate, acute and aristate, orange-yellow, with a more reddish-brown hue along the midrib on the back and as well on the shorter obtuse outer petals; stamens yellow, style yellowish, thickened or clavate above the base, stigmata (6-) 7, dirty rose-coloured."

We have studied a plant, sent from La Mortola to the New York Botanical Garden in 1913, which has not flowered; it appears to be related to O. lasiacantha.

Figure 223 represents a joint from the plant received from La Mortola, Italy, in 1913.

We have studied a plant, sent from La Mortola to the New York Botanical Garden in 1913, which has not flowered; it appears to be related to O. lasiacantha.

Figure 223 represents a joint from the plant received from La Mortola, Italy, in 1913.

X0.4. X0.4. X0.5.
Building Your Own Greenhouse

Building Your Own Greenhouse

You Might Just End Up Spending More Time In Planning Your Greenhouse Than Your Home Don’t Blame Us If Your Wife Gets Mad. Don't Be A Conventional Greenhouse Dreamer! Come Out Of The Mould, Build Your Own And Let Your Greenhouse Give A Better Yield Than Any Other In Town! Discover How You Can Start Your Own Greenhouse With Healthier Plants… Anytime Of The Year!

Get My Free Ebook


Post a comment