Abstract

Wood Anatomy of Lamiaceae. A Survey, with Comments on Vascular and Vasicentric Tracheids

Highlights

  • Quantitative and qualitative data are presented for 44 collections representing 42 species in 27 genera

  • Three quantitative features are combined in the ratio termed Mesomorphy (Carlquist 1977): vessel diameter times vessel element length divided by number ofvessels per mm2 This ratio has been computed for Lamiaceae (Table 1, column 15)

  • The Mesomorphy ratios for the species with helical thickenings in vessels are given in parentheses: Bystropogon plumosus (342), Dorystoechas hastata (23), Hemiandra pungens (224), Lepechinia calycina (64), L. ganderi (13), M onardella Unoides (16), Ocimum basilicum (26), Poliomintha longiflora (14), Prostanthera aspalanthoides (9), P. rotundifolia (11), Rosmarinus officina/is (7), Salazaria mexicana (5), Salvia apiana (19), S. canariensis (56), S. dorrii (4), S. funerea (9), S. mellifera (12), Trichostema lanatum (6), Westringia rosmariniformis (33)

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Summary

ECOLOGICAL CONCLUSIONS

Three quantitative features are combined in the ratio termed Mesomorphy (Carlquist 1977): vessel diameter times vessel element length divided by number ofvessels per mm2 This ratio has been computed for Lamiaceae (Table 1, column 15). The Mesomorphy ratios for the species with helical thickenings in vessels are given in parentheses: Bystropogon plumosus (342), Dorystoechas hastata (23), Hemiandra pungens (224), Lepechinia calycina (64), L. ganderi (13), M onardella Unoides (16), Ocimum basilicum (26), Poliomintha longiflora (14), Prostanthera aspalanthoides (9), P. rotundifolia (11), Rosmarinus officina/is (7), Salazaria mexicana (5), Salvia apiana (19), S. canariensis (56), S. dorrii (4), S. funerea (9), S. mellifera (12), Trichostema lanatum (6), Westringia rosmariniformis (33). The method used above for citing Mesomorphy figures for species can be used for the species of Lamiaceae with vascular or vasicentric tracheids: Dorystoechas hastata (23), Hemiandra pungens (224), Lavandula dentata (33), Lepechinia calycina (64), L. cardiophy/la (14), L. fragrans (24), L. ganderi (13), Monarde/la linoides (16), Ocimum basilicum (26), Poliomintha longiflora (14), Prostanthera aspa/anthoides (9), P. rotundifo/ia (11), Rosmarinus officina/is (7), Salazaria mexicana (5), Salvia dorrii (4), S. funerea (9), S. mellifera (12), Teucriumflavum (36), and Trichostema lanatum (6). Salvia and Trichostema, in which a condition transitional between vascular and vasicentric tracheids occurs, have leaves that crisp somewhat during the hot months, but tend to persist

MORPHOLOGICAL CONCLUSIONS
SYSTEMATIC CONCLUSIONS
New York Botanical

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