Stem of the Month: December – Catkin & Pussywillow
US Wildflower - Hollow Joe Pye Weed, Trumpetweed, Tubular Thoroughwort, Hollow-stemmed Joe-pye-weed - Eutrochium fistulosum
Hollow stem flower hi-res stock photography and images - Alamy
Eutrochium fistulosum (hollow Joe-Pye weed): Go Botany
What to Do With Those Fresh-Cut Flowers as Soon as You Get Home
Short communication: thermal regimes in hollow stems of herbaceous plants—concepts and models | SpringerLink
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Plants with joined stem and hollow internodes are known as A. CulmsB. ScapeC. EphemeralsD. Lianas
Why does a lotus plant have a long hollow stem? - Quora
Close–up of giant Allium purple flower. Tiny intricate flowers on thin hollow stems inside rounded shape of the allium plant in spring Stock Photo - Alamy
Secrets of the stalk: Regulating plant temperature from the inside out