Teucrium

Sticky germander Teucrium viscidum, copyright Hong Kong Herbarium.

Belongs within: Lamiaceae.

Teucrium, germanders, is a cosmopolitan genus of labiate herbs with a single lower corolla lip, the upper lip of most Lamiaceae being absent.

Characters (from Hickman 1993): Annual or perennial, glabrous to short-hairy. Stems ascending to erect, branched or not. Leaves petioled, crenate to deeply lobed, lobes oblong. Flower with calyx more or less radial, ten-veined, five-lobed, lobes subequal; corolla one-lipped, tube split above, lip five-lobed, more or less flat, distal lobe much larger than lateral lobes, tip rounded, lateral lobe tips acute to obtuse; stamens 4, lower pair generally larger than upper; style lobes generally equal.

<==Teucrium
    `--T. sect. Isotriodon subsect. Pycnobotrys SP08
         |--T. japonicum SP08
         |--T. quadrifarium SP08
         |--T. scabrum Suddee & Paton 2008 SP08
         `--T. viscidum SP08

Teucrium incertae sedis:
  T. botrys C55b
  T. brevifolium PT98
  T. chamaedrys C55b
  T. corymbosum BR65
  T. cubense H93
    |--T. c. ssp. cubense H93
    `--T. c. ssp. depressum H93
  T. decaisnei AGF98
  T. divaricatum PT98
  T. fruticans P01
  T. glandulosum H93
  T. grandiusculum BR65
  T. integrifolium BR65
  T. marum BR65
  T. montanum C55a
  T. polium Linnaeus 1753 PL04
  T. racemosum BR65
    |--T. r. var. racemosum BR65
    |--T. r. var. triflorum BR65
    `--T. r. var. tripartitum BR65
  T. sessiliflorum BR65
  T. shanicum SP08
  T. tomentosum SP08

*Type species of generic name indicated

REFERENCES

[AGF98] Abd El-Ghani, M. M., & A. G. Fahmy. 1998. Composition of and changes in the spontaneous flora of Feiran Oasis, S Sinai, Egypt, in the last 60 years. Willdenowia 28: 123–134.

[BR65] Black, J. M., & E. L. Robertson. 1965. Flora of South Australia. Part IV. Oleaceae–Compositae. W. L. Hawes, Government Printer: Adelaide.

[C55a] Candolle, A. de. 1855a. Géographie Botanique Raisonée: Ou exposition des faits principaux et des lois concernant la distribution géographique des plantes de l’époque actuelle vol. 1. Librairie de Victor Masson: Paris.

[C55b] Candolle, A. de. 1855b. Géographie Botanique Raisonée: Ou exposition des faits principaux et des lois concernant la distribution géographique des plantes de l’époque actuelle vol. 2. Librairie de Victor Masson: Paris.

[H93] Hickman, J. C. (ed.) 1993. The Jepson Manual: Higher Plants of California. University of California Press: Berkeley (California).

[PT98] Panitsa, M., & D. Tzanoudakis. 1998. Contribution to the study of the Greek flora: flora and vegetation of the E Aegean islands Agathonisi and Pharmakonisi. Willdenowia 28: 95–116.

[P01] Pennisi, E. 2001. Linnaeus’s last stand? Science 291: 2304–2307.

[PL04] Pohl, G., & I. Lenski. 2004. Zur Verbreitung und Vergesellschaftung von Pennisetum orientale Rich. in Nordeuböa (Griechenland) (Poaceae, Paniceae). Senckenbergiana Biologica 83 (2): 209–223.

[SP08] Suddee, S., & A. Paton. 2008. Teucrium scabrum (Lamiaceae), a new species from Thailand. Kew Bulletin 63 (4): 675–678.