Thunberg's astilbe

Names and Synonyms

Common Names

• Thunberg's astilbe
• Ostrich Plume

Scientific Names

Accepted name

Synonyms

• Hoteia thunbergii

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and the phylum Streptophyta, falling under the class Equisetopsida and subclass Magnoliidae. Within the order Saxifragales, it is classified under the family Saxifragaceae. Its specific taxonomic identity is defined by the genus Astilbe.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a specific and somewhat localized geographical distribution across East Asia. Its presence can be traced to the temperate regions of Japan, where it grows naturally within the landscape. Additionally, the species extends its range into the Russian Far East. Within this northern territory, it is specifically documented on the Kuril Islands. Consequently, the natural habitat of Astilbe thuunbergii is primarily concentrated in these distinct maritime and coastal areas.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Life history

The life history of Astilbe thübergii is characterized by its status as a perennial, meaning it lives for more than two years and undergoes a consistent cycle of seasonal growth and dormancy. As a perennial herb, it establishes a robust root system, often consisting of thick rhizomes, which allows the plant to store energy during the dormant winter months and emerge vigorously each spring. The life cycle begins with the development of basal foliage, which forms lush, mounded clumps of textured leaves. As the growing season progresses, the plant transitions from vegetative growth to its reproductive phase, sending up tall, erect flower spikes that bloom profusely. Following pollination, the plant produces seeds, contributing to its reproductive potential, though in many cultivated settings, it spreads primarily through slow lateral expansion of its rhizomes. Once the flowering period concludes and temperatures drop, the above-ground biomass dies back to the ground level, leaving the perennial root structure to remain protected underground until the next cycle of growth commences.

Lifecycle :

perennial

Morphology

The morphology of Astilbe thubergii is characterized by its growth form as a perennial herb and forb, manifesting as a non-woody, herbaceous plant. It functions as an independent organism, neither acting as a parasite nor an epiphyte, as it maintains a terrestrial lifestyle. The plant is self-supporting in its structure, lacking any climber, vine, or liana tendencies, and is primarily adapted to terrestrial environments rather than aquatic or semiaquatic habitats.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Parasite :

independent

Woodiness :

non-woody

Reproduction

The reproduction of Astilbe thuunbergii is characterized by the production of minute seeds that play a critical role in its dispersal and establishment processes. Quantitative analysis of its reproductive output reveals that the seeds are exceptionally lightweight, with a recorded mean seed mass of 5.5e-05 g. The variability in individual seed size is relatively narrow, with the seed mass ranging from a minimum of 4e-05 g to a maximum of 7e-05 g. These small seed dimensions suggest a reproductive strategy optimized for efficient distribution, likely facilitated by environmental factors such as wind or water, which assist in the colonization of suitable habitats.

Seed mass max:

7e-05 g

Seed mass mean:

5.5e-05 g

Seed mass min:

4e-05 g

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Astilbe thunbergii has 1 reported plant parts identified across 1 scientific publications and several other databases that are studied for medicinal purposes. The most consistently reported plant part include rhizome.

Rhizome

1. Journal of natural products

Chemicals

Astilbe thunbergii has 3 reported phytochemicals identified across 1 scientific publications and several other databases. The most consistently reported chemicals include Astilbin, Eucryphin, bergenin.

Astilbin

1. Journal of natural products

Eucryphin

1. Journal of natural products

bergenin

1. Journal of natural products