Opuntia macdougaliana Rose Smiths Misc Coll 50 516 1908

Opuntia micrarthra Griffiths, Monatsschr. Kakteenk. 23: 130. 1913.

Plant about 4 meters high, with a distinct cylindric trunk branching from near the base; joints oblong, 30 cm. long by 8 to 10 cm. broad, softly pubescent; areoles distinct, small; spines generally 4, one much longer (2.5 to 4 cm. long), somewhat flattened, yellowish, becoming whitish in age; glochids short, numerous, yellow; fruit globular to oblong, 5 cm. long, the surface divided into diamond-shaped plates, red, with a broad deep cup at apex, the numerous small rounded areoles filled with clumps of yellow glochids, very rarely, with one or two spines.

Type locality: Near Tehuacan, Mexico.

Distribution: Southern Mexico.

Figure 209 is from a photograph of the type plant taken by Dr. MacDougal at El Riego, Tehuacan, Mexico, in 1906; figure 210 represents a plant grown from a cutting of the type.

188. Opuntia velutina Weber in Gosselin, Bull. Mus. Hist. Nat. Paris 10: 389. 1904.

Opuntia nelsonii Rose, Smiths. Misc. Coll. 50: 516. 1908.

Stems 1 to 4 meters high; joints flattened, oblong to pear-shaped in outline, 15 to 20 cm. long by 10 to 15 cm. broad near the top, pubescent, pale yellowish green in herbarium specimens; areoles 2 to 3 cm. apart; spines 2 to 6, yellow, becoming white in age, very unequal, the longer ones 3 to 4 cm. long; bristles many, yellow, becoming brownish; flowers rather small; petals yellow,

1 to 3 cm. long; ovary pubescent, bearing many yellowish brown bristles; filaments red; stigmalobes pale green; fruit "dark red."

Type locality: In Guerrero, Mexico.

Distribution: Southern Mexico.

Plate xxxii, figure 3, represents a flowering joint of a plant collected at Tehuacan, Mexico, by Dr. MacDougal and Dr. Rose in 1906.

Was this article helpful?

0 0
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