<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Acacia Miller</title> <meta content="text/html; charset=UTF-8" http-equiv="content-type"/> </head> <body> <p>KEY TO THE SPECIES OF ANT ACACIAS</p> <p>la. Petiolar glands usually saddle-shaped or canoe-shaped, or long and narrow, lower than the petiolar groove and nearly as long as the petiole.</p> <p>1b. Petiolar glands dome-shaped, volcano-shaped, or columnar, rarely absent.</p> <p>2a. Petiolar glands long and narrow, lower than the petiolar grooves and nearly as long as the petiole............................................ 4. A. cookii</p> <p>2 b. Petiolar glands saddle-shaped or canoe-shaped.</p> <p>3a. Spines with two longitudinal flanges; leaflets more than 10 mm (usually 12-18 mm) long............................................ 10. A. mayana</p> <p>3b. Spines lacking longitudinal flanges; leaflets less than 10 mm long.</p> <p>4a. Leaflets with 2-3 veins from the base, lateral veins obvious; inflorescence more than 3 times longer than wide.......5. A. cornigera</p> <p>4b. Leaflets with one vein from the base, lateral veins not obvious; inflorescence subglobose, less than 2 times longer than wide................................................................................................................ 13. A. sphaerocephala</p> <p>5a. Inflorescence cylindrical, more than 5 times longer than wide.</p> <p>5b. Inflorescence globose, never more than 2 times longer than wide.</p> <p>6a. Leaflets with one vein from the base, lateral veins not obvious; enlarged stipular spines flattened at the base........8. A. hindsii</p> <p>6b. Leaflets with 2-5 veins from the base, lateral veins obvious; enlarged stipular spines terete or oval in cross section.</p> <p>7a. Petiolar glands usually solitary; rachis glands scattered along leaf rachis........................6. A. gentlei</p> <p>7b. Petiolar glands 3-5; rachis glands absent..................................................................................................3. A. collinsii</p> <p>8a. Leaflets more than 1.8 mm wide, with 2-3 veins from the base, lateral veins obvious.... 1. A. allenii</p> <p>8b. Leaflets mostly less than 1.8 mm wide, with one vein from the base, lateral veins not obvious.</p> <p>9a. Adaxial surface of the petiole flattened (on well-developed leaves) with numerous petiolar glands (6-30) present on the flattened surface..............................................................................11. A. melanoceras</p> <p>9b. Adaxial surface of the petiole grooved with fewer than 13 petiolar glands present in the groove.</p> <p>10a. Stipular spines asymmetrical, commonly curved around the stem, pubescent with yellowish hairs..................................................................................................................................... 9. A. janzenii</p> <p>10b. Stipular spines symmetrical, glabrous to puberulent.</p> <p>11a. Rachis glands cylindrical and narrowing toward the base; most stipular spines not enlarged, those that are usually not inhabited by acacia-ants........12. A. ruddiae</p> <p>11b. Rachis glands narrowly volcano-shaped, or columnar and not narrowing toward the base; most stipular spines enlarged and inhabited by acacia-ants.</p> <p>12a. Petiolar and rachis glands columnar; inflorescences in clusters of 10-40; fruit margins ridged.................................................................. 2. A. chiapensis</p> <p>12b. Petiolar and rachis glands narrowly volcano-shaped; inflorescences in clusters of 4-8; fruit margins not ridged.................................................7. A. globulifera</p> </body> </html>