Table 3. A in Resurrection of Stipa tremula and taxonomy of the high-alpine species from the Stipa purpurea complex (Poaceae, Pooideae)

Table 3. A comparison and differences in the main morphological characters of the species from the Stipa purpurea complex and allies.
Taxon CharacterStipa zhadaensisStipa roborowskyiStipa klimesiiStipa × ladakhensisStipa tremulaStipa arenosaStipa purpureaCharacter of sheaths of vegetative shootsdensely pubescentglabrous and smoothdensely pubescentdensely pubescentglabrous and smoothdensely pubescentdensely pubescentThe longest ligules on the vegetative shoots [mm]2-30.5-1.5(-2)(2-)3.5-8(-10)(1.5-)2-4(-5.5)(0.5-)1-2(-3)(1-)1.5-3(-4.5)(3.8-)4.5-6.5(-8)Shape of ligules on the vegetative shootstruncatetruncateacuteacutetruncatetruncateacuteLigules of middle cauline leaves [mm]ca. 2(1-)1.5-2.5(-3.5)(1.5-)2.5-8(-9)2-4(-5)(1-)1.5-2.7(-4)(1.6-)1.9-3.5(-4.5)(2.2-)4.5-8(-9)Character of lower cauline leave sheathspubescentglabrous and smoothdensely pubescentdensely pubescentglabrous and smoothsparsely pubescent to glabrousdensely pubescentPanicle+/- laxcompressedcompressed+/-compressedlaxlaxlaxBranches of the paniclestraightstraightstraightupper straight, lower slightly flexuousflexuousflexuousflexuousGlumes [mm]20-2811-1513-1816-19(-20)(13-)14-17(-19.5)(19.5-)21-23.5(-25)(17-)19-26(-28)Floret [mm]8-11(6-)6.5-7.5(-8)(7-)8.3-9.5(-10.5)8.5-10.2(7.5-)8.4-9.5(-11)(11.5-)12-14(-15)(8.5-)9.5-11.2(-12.1)Callus [mm]ca. 1.51.2-21.4-21.5-1.9(1.5-)1.6-2(-2.3)(2-)2.3-3(-3.8)(1.8-)2-2.4(-2.7)Awn [mm]60-90(40-)47-60(-68)(25-)35-45(-52)46-58(44-)60-74(-90)(78-)95-112(-130)(58-)70-91(-105)Hairs on lower segment of awn (column) [mm](0.6-)1-1.51.5-2.1(1.3-)1.5-2(-2.4)1.7-2.3(1.3-)1.7-2(-2.3)(1.5-)1.6-2(-2.3)(1.5-)1.6-2(-2.2)Hairs on seta [mm]0.5-1(0.3-)0.5-1.1(-1.4)(1-)1.3-2(-2.3)1.6-2.1(1.8-)2.2-2.6(-3.1)(2.1-)2.3-2.5(-3)(1.9-)2.1-2.4(-2.7)Length of hairs on seta to the length of hairs on columnshortershortershortershorter to equallongerlongerlonger