![A spruce tree at the Arboretum has produced a rare batch of half male, half female cones | WBUR News A spruce tree at the Arboretum has produced a rare batch of half male, half female cones | WBUR News](https://media.wbur.org/wp/2023/05/triptych-cones-1000x807.jpg)
A spruce tree at the Arboretum has produced a rare batch of half male, half female cones | WBUR News
![Composite of pine cones : 1. whole 5-month female cone; 2. longitudinal section through a female cone; 3. longitudinal section through a male cone; 4. whole male cone - UWDC - UW-Madison Libraries Composite of pine cones : 1. whole 5-month female cone; 2. longitudinal section through a female cone; 3. longitudinal section through a male cone; 4. whole male cone - UWDC - UW-Madison Libraries](https://asset.library.wisc.edu/1711.dl/HL32SLT25LR3V8Q/M/h1380-9cb5c.jpg)
Composite of pine cones : 1. whole 5-month female cone; 2. longitudinal section through a female cone; 3. longitudinal section through a male cone; 4. whole male cone - UWDC - UW-Madison Libraries
![Frontiers | Large investment of stored nitrogen and phosphorus in female cones is consistent with infrequent reproduction events of Pinus koraiensis, a high value woody oil crop in Northeast Asia Frontiers | Large investment of stored nitrogen and phosphorus in female cones is consistent with infrequent reproduction events of Pinus koraiensis, a high value woody oil crop in Northeast Asia](https://www.frontiersin.org/files/Articles/1084043/fpls-13-1084043-HTML/image_m/fpls-13-1084043-g001.jpg)
Frontiers | Large investment of stored nitrogen and phosphorus in female cones is consistent with infrequent reproduction events of Pinus koraiensis, a high value woody oil crop in Northeast Asia
![Stone pine reproductive cycle phases: induction of male primordia (P1)... | Download Scientific Diagram Stone pine reproductive cycle phases: induction of male primordia (P1)... | Download Scientific Diagram](https://www.researchgate.net/publication/301803105/figure/fig1/AS:375710058336256@1466587666202/Stone-pine-reproductive-cycle-phases-induction-of-male-primordia-P1-and-female.png)
Stone pine reproductive cycle phases: induction of male primordia (P1)... | Download Scientific Diagram
![Agronomy | Free Full-Text | Differentially Expressed Transcription Factors during Male and Female Cone Development in Pinus halepensis Agronomy | Free Full-Text | Differentially Expressed Transcription Factors during Male and Female Cone Development in Pinus halepensis](https://www.mdpi.com/agronomy/agronomy-12-01588/article_deploy/html/images/agronomy-12-01588-g001.png)