. Carnegie Institution of Washington publication. n8 THE KIG. 146.—Opuntia depressa, in the foreground. Series 5. BASILARES. We recognize eight species as forming this series. They are low or bushy, much branched plants, with flat, thin, broad joints, the areoles small, usually numerous and close together. KEY TO SPECIES. Joints papillose, not pubescent. Fruit juicy, red 107. 0. lubric'a Fruit dry or nearly dry 108. O. treleasei Joints mostly manifestly pubescent. Spines none or few. Flowers red 109. 0. basilaris Flowers yellow to orange. Joints bright green. Glochids long no. O. m
. Carnegie Institution of Washington publication. n8 THE KIG. 146.—Opuntia depressa, in the foreground. Series 5. BASILARES. We recognize eight species as forming this series. They are low or bushy, much branched plants, with flat, thin, broad joints, the areoles small, usually numerous and close together. KEY TO SPECIES. Joints papillose, not pubescent. Fruit juicy, red 107. 0. lubric'a Fruit dry or nearly dry 108. O. treleasei Joints mostly manifestly pubescent. Spines none or few. Flowers red 109. 0. basilaris Flowers yellow to orange. Joints bright green. Glochids long no. O. microdasys Glochids short 111. O. macrocalyx Joints grayish green 112. 0. rufida Spines very numerous. Areoles close together 113. O. pycnantha Areoles distant . 114. 0. comonduensis 107. Opuntia lubrica Griffiths, Rep. Mo. Bot. Card. 21: 169. 1910. "A low ascending, spreading species very similar in habit to 0. microdasys, frequently 4^ dm. high and when well developed 10 dm. or more in diameter; joints sub-circular to obovate, about 15 by 20 cm., or in case of last joints of previous year about 12 by 15 cm., bright, glossy, leaf-green, very evidently papillate but scarcely pubescent under a lens; leaves subulate, cuspidate-pointed, 6 to 9 mm. in length; areoles 15 to 22 mm. apart, 4 to 6 mm. in diameter, sub-circular, prominent; spicules prominent, 4 to 5 mm. in length, erect, bushy, in crescentic tufts in upper portion of areoles, becom- ing much more numerous in age, and at 2 to 4 years completely filling the areole, and, like 0. riifida and some other species, becoming very abundant and conspicuous by proliferation of areolar tissue into short raised or columnar structures; spines exceedingly variable, sometimes nearly absent, again quite abundant and irregularly distributed, none to many, mostly i to 3, becoming more numerous with age and in scattering areoles to as high as 16, mostly about 12 mm. long, but sometimes 2^2 cm., yellowish, translucent, bonelike, someti
Size: 2204px × 1133px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorcarnegie, bookcentury1900, bookdecade1900, bookyear1902
