| Name | Irwin, Howard Samuel & Arroyo, Mary Therese Kalin |
| Agent type | Team/Group |
| First date flourished | 2005 |
| ASA Botanist ID | 192106 botanist |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/180cac0e-55a6-4b6b-aa46-3290f89cfec3 |
| Author name | H. S. Irwin & Arroyo |
| B & P Author Abbrev. | H. S. Irwin & Arroyo |
| Standard/Label Name | H. S. Irwin & M. T. K. Arroyo |
| Full Name | Irwin, Howard Samuel & Arroyo, Mary Therese Kalin |
| Specialty Author | Spermatophytes |
| Citation as Author | Brittonia; a Series of Botanical Papers. New York, NY |
| Team Members: | Irwin, Howard Samuel Arroyo, Mary Therese Kalin |