Table 1 Leaf characters by tribe in Asteraceae of the xeric scrub at the REPSA, Mexico
From: Meso- or xeromorphic? Foliar characters of Asteraceae in a xeric scrub of Mexico
Tribe | Anthemidae | Astereae | Bahieae | Carduae | Cichorieae | Coreopsidae | Eupatorieae | Gnaphalieae | Heliantheae | Millerieae | Nassauvieae | Senecioneae | Tageteae |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
No. species/character | 2 | 5 | 2 | 1 | 3 | 5 | 12 | 2 | 10 | 2 | 1 | 3 | 4 |
Leaf size classification | Micro* | Noto (3), micro (2) | Micro | Macro | Macro (2), meso | Meso (2), micro (2), noto (1) | Noto (5), meso (4), micro (2), macro (1) | Micro | Meso (4), noto (2), mega (2), macro (1), micro (1) | Meso, noto | Meso | Macro (2), meso | micro (2), meso (1), nano (1) |
Lobation | Lobed | Unlobed (4), lobed | Lobed | Lobed | Lobed (2), unlobed | Lobed | Unlobed | Unlobed | Unlobed (7), lobed | Unlobed | Unlobed | Unlobed (2), lobed | Unlobed (2), lobed |
Margin type | Untoothed | Untoothed (3), toothed | Untoothed | Tooted | Toothed (2), untoothed | toothed (3), untoothed | Toothed (11spp), untoothed | Untoothed | Toothed (8) or untoothed | Toothed | Toothed | Toothed (2spp) or untoothed | Toothed (2spp) or untoothed |
Tooth type | NA | Serrated (2 spp) | NA | Serrated | Eentate | Serrated (3) | Serrated (11) | NA | Serrated (6), crenated (2) | Serrated | Serrated | Serrated (1) or dentate (1) | Serrated (2) |
Leaf type by the position of stomata | Amphi* | Amphi | Amphi | Amphi | Amphi (2), hypos | Amphi (3), hypos | Hypos (8), amphi | Amphi (1), hypos | Amphi (7), hypos | Amphi | Amphi | Hypos (2), amphi | Amphi |
Bifacial or equifacial | Bifacial | Bifacial or equifacial | Bifacial | Bifacial | Bifacial or equifacial | Bifacial | Bifacial | Bifacial | Bifacial | Bifacial | Bifacial | Bifacial or equifacial | |
Total lamina thickness, mean µm | 102.8 | 217.3 | 326.7 | 413.1 | 182.8 | 246.4 | 148.5 | 126.8 | 200.5 | 197.07 | 231.7 | 238.2 | 274.9 |
Cuticle surface | Striated (1), smooth | Striated | Striated | Striated | Striated (2), smooth | Striated | Striated (11), smooth | Smooth | Striated (7), smooth | Smooth | Striated | Striated | Striated (3), smooth |
Cuticle thickness, range µm | 0.31–0.43 | 0.27–0.56 | 0.32–0.37 | 0.32 | 0.30–0.45 | 0.22–0.41 | 0.20–0.60 | 0.33–0.42 | 0.21–1.15 | 0.23–0.24 | <0.1 | 0.36–0.46 | 0.19–0.44 |
Epidermal cell walls (surface view) | Straight to wavy | Straight to wavy | Wavy | Straight | Straight to wavy | Straight to wavy | Wavy | Wavy | Straight to wavy | Wavy | Wavy | Straight to wavy | Straight to wavy |
Position of stomata regarding ordinary epidermal cells | Same level | Same level | Same level | Same level | Same level | Same level | Same level (10), higher | Same level | Same level (10), higher | Same level | Same level | Same level | Same level |
Stomatal density (abaxial epidermis, mean stomata/mm2) | 244 | 369 | 366 | 349 | 322 | 383 | 421 | 349 | 394 | 279 | 174 | 256 | 349 |
Guard cell length, mean µm | 21.36 | 21.04 | 23.8 | 24.38 | 18.7 | 21.61 | 19.64 | 17.89 | 20.31 | 20.18 | 25.09 | 23.09 | 19.39 |
Palisade parenchyma thickness, mean µm | 22.48 | 69.99 | 117.65 | 195.58 | 46.2 | 98.03 | 47.29 | 44.43 | 76.27 | 54.34 | 52.40 | 45.47 | 72.68 |
Spongy parenchyma thickness, mean µm | 53.38 | 48.20 | 58.08 | 165.68 | 90.94 | 92.89 | 71.48 | 52.97 | 81.54 | 113.32 | 140.46 | 157.6 | 93.12 |
Stomatal pore area index (SPI) % | 10.37 | 15.53 | 15.70 | 20.75 | 15.06 | 17.27 | 14.56 | 11.13 | 15.09 | 11.39 | 10.98 | 13.57 | 13.80 |