San Diego Management & Monitoring Program| Kingdom | Phylum | Subphylum | Class | Order | Suborder | Family |
Southwestern peninsular ranges in San Diego and into Baja, California [1,2].
Ten occurrences on Conserved Lands in Mu3 (Marron Valley Mitigation Bank, Otay Ranch Preserve, Otay Lake Cornerstone Lands, Otay Mountain Wilderness Area, Otay Mountain Ecological Reserve, BLM, Marron Valley).
None [2].
Grows among boulders, stones, and in cracks of the bedrock of intermittent streams in rocky gorges surrounded by coastal sage scrub and chaparral [3]. Elevation range is 10-660 meters. Associated riparian species include Baccharis salicifolia, Bothriochloa barbinodis, Brodiaea orcuttii, Cupressus forbesii, Iva hayesiana, Juncus acutus ssp. leopoldii, Mimulus guttatus, Muhlenbergia rigens, and Stemodia durantifolia.
Lamiaceae family [2]. Previously classified as Monardella linoides ssp. viminea, but that subspecies classification was split into Monardella stoneana and Monardella viminea [4].
M. stoneana often grows together in clumps of 1 to 4 individual plants [4].
Bloom period is June-September [2]. Seeds mature in late spring and early summer.
No pollination studies are known to exist for M. stoneana; however, other Monardella taxa are visited by butterfly and bee species [3].
Increased frequency of fires of all sizes can result in type conversion or invasion of nonnative grasses into chaparral habitats that can choke out shrubs associated with M. stoneana [4]. Megafires can be a particular threat because a single megafire could eliminate a large proportion of individual plants within the extant range of the species. Temporary fire impacts include the death of individual plants; however, it is not considered a threat to the continued existence of the species.
Pollinator movement and availability should be considered when assessing likely population distributions and survival, and habitat needs [1]. Can be easily confused with M. viminea [2].
