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Download PDF by I. M. Yaglom: A Simple Non-Euclidean Geometry and Its Physical Basis

By I. M. Yaglom


ISBN-13: 3540903321978

ISBN-10: 0387903321

ISBN-13: 9780387903323

ISBN-10: 3540903321

ISBN-13: 9783540903321

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Extra resources for A Simple Non-Euclidean Geometry and Its Physical Basis

Example text

It’s purple with dark purple leopard spots, has a more vivid, waterfall-patterned frilly lip, and fuller flower form. Peggy Ruth Carpenter grows quickly, often with several 10 in. (25 cm) branching spikes blooming in small pots. Flowers are lightly fragrant of spice. This hybrid has a lot of Pansy Orchid (Miltonia) heritage, giving it that amazing lip and compact habit. The other influences are Spider Orchid (Brassia), Snail Shell Orchid (Cochlioda), and Toothed Tongue Orchid (Odontoglossum). When people have trouble with Peggy Ruth Carpenter, it’s usually because the humidity is low.

When used as a parent, Brassavola nodosa can create adorable offspring that are fragrant, but, again, scent can vary. I highly recommend the hybrid Brassavola Little Stars (nodosa × subulifolia), which really increases the flower count. PRONOUNCED bra-sah-VOH-lah no-DOH-sah ABBREVIATED B. THE PLANT Compact sympodial epiphyte; slender stem, single leaf, one to six fragrant starry white and green big-lipped flowers LIGHT NEEDS Medium to high; southern window TEMPERATURE RANGE Warm; days 70–85°F (21–29°C), winter nights 60°F (16°C) or higher, adaptable POTTING NEEDS Medium to large orchid bark, plastic pot just big enough to hold roots BLOOM TIME Anytime, peak in autumn Brassavola nodosa and Hybrids Orchid checklist: Grows on sunny windowsill Long-lasting flowers Sprays of multiple flowers Big flowers Great cut flower Intensely colored or patterned Noted for fragrance Attractive plant habit Once-a-week watering and fertilizer Repeat bloom Grows under fluorescent lights Grows easily into specimen The hybrid Brassavola Little Stars (right) lends more flowers to the fragrant display of Lady-of-the-Night orchids, but the simple beauty of the species Brassavola nodosa (left) makes it also worth growing.

Confucius loved it. Just about any boxed corsage orchid is bound to be a Cymbidium. The incredible substance of the beautiful 3 in. (8 cm) wide bloom lasts for weeks when cut. The many-flowered spikes endure for months on the plant. Cymbidiums are basically terrestrial orchids, meaning they grow in the ground instead of in trees. They prefer, therefore, to be in fine mix, in big pots, kept just moist. You can even grow them as landscape plants in the garden in frost-free areas. These typically big plants are native from India to Japan to Australia, where they grow in high light and often very cool temperatures.

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A Simple Non-Euclidean Geometry and Its Physical Basis by I. M. Yaglom

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