Descriptions of Three Hundred New Species of South American Plants: With an Index to Previously Published South American Can Species by the Same Author (Classic Reprint) - Softcover

H. H. Rusby

Softcover

ISBN 10: 1332219756 ISBN 13: 9781332219759

Publisher: Forgotten Books, 2020

Synopsis

Excerpt from Descriptions of Three Hundred New Species of South American Plants: With an Index to Previously Published South American Can Species by the Same Author

Xanthosoma(§ Acontiam) bilineata.

Glabrous. Corm 3.5 cm. broad, 2.5 cm. high, the roots dense on sides and base. Petioles about 4.5 dm. long, the lower half gradually dilated and sheathing at the base. Blade 15 to 20 cm. long from summit of petiole, the lateral lobes extending about 5 cm. farther down, its extreme width 2.5 to 3.5 dm. Middle lobe 12 to 15 cm. broad, ovate with an abrupt very short triangular acute acumination. Lateral lobes 14 to 18 cm. long, 7 to 9 cm. wide, inequilaterally ovate, acutish, the base somewhat angular or lightly hastate. Leaf thin, the primaries broad, flat, the secondaries of the middle lobe about 12 on a side, of the lateral about 10, somewhat decurrent on the primary, widely spreading, little curved, the marginal line double, a strong undulating one 3 mm. from the margin, a more slender one at the margin, the intervening fine venation very loose and slender. Peduncle (only one seen) 18 cm. long, stout, erect. Tube of spathe 3 cm. long, 12 mm. wide, as pressed, the limb 8 cm. long, 2 cm. broad in the closed and pressed state, acuminate and acute, white. Dissection material wanting.

"Spathe white. In a plantain patch, shady open ground in a damp place at Onaca, 2500 feet. Abundant, August 16." (Herbert H. Smith, Colombia, No. 2475.)

Tillandsia (§ Pseudocatopsis) triangularis.

More or less finely furfuraceous, especially above. Leaf bases forming a dense imbricated mass, 8 cm. broad, 10 cm. high; triangular, flat, 3 cm. wide, abruptly contracted into the leaves which are 7 to 12 cm. long, and about 4 to 6 mm. wide, tapering to a fine point, the nerves very numerous and fine. Peduncle and panicle each about 15 cm. long, the scales of the peduncle closely appressed, 2 cm. long, ovate, acute. Branches of the panicle close together, 3 to 6 cm. long, simple, subtended by bracts similar to those of the peduncle, the flowers distichous, thick, about 3 to the cm. Floral bract 6 mm. long and broad, obovate with sub-truncate, minutely mucronulate summit, about 20-nerved. Calyx 5 mm. long, the sepals ovate, obtusish, nearly as broad as long, not keeled, the nerves obscure.

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About this edition

• Publisher: Forgotten Books
• Publication date: 2020
• ISBN 10: 1332219756
• ISBN 13: 9781332219759
• Binding: Paperback
• Number of pages: 174