Dracocephalum thymiflorum

Thyme-Leaved Dragonhead

Flower Bottom

Bow Valley Regional Park
 22-Jun-01

Thymiflorum: Answers to key questions in Budd's Flora and Manual of Montana Vascular Plants leading to this species. 

verticillasters forming an long, loose, interrupted inflorescence; NOT [verticillasters crowded tightly together]

calyx puberulent; NOT [calyx hirsute]

 

Dracocephalum: Answers to key questions in Budd's Flora and Manual of Montana Vascular Plants leading to this genus. 

leaves crenate to serrate; NOT [leaves entire or nearly so], NOT [leaves deeply palmately lobed]

flowers occur in paired cymes arising from the axils of two oppositely placed leaves (each pair comprising a single verticillaster); NOT [flowers solitary, terminal or in racemes]

calyx irregular, with one large upper lobe and four smaller lower lobes; NOT [calyx with three upper lobes differing from the lower two]; NOT [calyx regular]

calyx without hooks at tips of lobes

upper corolla lip often hood-like, at least partially overarching the stamens; NOT [upper corolla lip not hood-like, not enclosing stamens]

stamens 4

 

Labiatae: Answers to key questions in Budd's Flora  leading to this family. 

herbs; NOT [shrubs or trees]

plants green or with some chlorophyll

plants not aquatic

stems square

leaves opposite

leaves not bearing bladders

flowers not in heads or spikes; NOT [flowers in long or short spikes], NOT [flowers in heads or in form resembling a head]

flowers with two floral rings

petals wholly or partly united forming a tube or bell

corolla irregular; NOT [corolla regular]

ovary superior; NOT [ovary inferior]

fruit with 4 nutlets; NOT [fruit a many-seeded capsule]