| SPECIES | Thermopsis rhombifolia v. montana |
| Common name and alpha code | mountain thermopsis THRHM (was T. montana ) |
| General Information | Perennial herb Occurs on well-drained sandy soils to wet meadows and streamsides. 160 |
| TABLE: | SEED |
| Seeds/Lb. | 15,000 34 In ref. #88: 30,000/lb, 66/gram (Eddleman, 1978) |
| Germ % | In ref. #88: GERMINATIVE CAPACITY: 50% (Eddleman, 1979); 60% (Eddleman, 1978) |
| Germ Test Amt | |
| Germ Test Cost | |
| Purity % | |
| Purity Test Amt | |
| Purity Test Cost | |
| Germination Pretreatment
Requirement
|
In ref. #88: STRATIFICATION:
Requires long stratification but stratification should not exceed 4 months (Eddleman,
1979) SCARIFICATION: Nick seed coat of 12-month-old seed (Eddleman, 1978) LABORATORY GERMINATION: TEMPERATURE: Constant: Best germination at or near 20°C (Eddleman, 1979); Fluctuating: 30-20°C (Eddleman, 1978) LIGHT: 8 hours of light during period of high temperature (Eddleman, 1978) |
| Seed Processing Needed e.g. awns | |
| Storage Requirements | |
| Storage Length (Years) | In ref. #88: Seed loses viability rapidly and should not exceed 1 year of age (Eddleman, 1979) |
| Maturity Date | Blooms from late spring to
mid-summer. 151 May to August 160 In ref. #88: Mid Jul-mid Aug. optimum collection mid Jul-mid Aug (Eddleman, 1978) |
| Pollinators Seed Dispersal Mechanism | |
| Breeding: self; Cross; Asexual Reproduction | |
| Disease Problems | |
| Insect Predation | Seeds sent to BPN in 1994 were "bug damaged" 8 |
| Hand Collection Methods, Problems, and Cost/Lb. | Majority of pods sent to BPN in 1994 were empty 8 |
| TABLE: | SEED INCREASE INFO |
| Sow Rate for Seed Increase
Plantation, Lb./Acre |
|
| 1st Year Yield, Lb./acre | |
| 2nd Year Yield, Lb./acre | |
| Field Life Span: Years | |
| Production Cost/Lb. | |
| Field Distance Requirements | |
| Sow Date | In ref #33: PLANTING TIME: Fall planting of 1-year-old seed appears most effective (Eddleman, 1979, 1978) |
| Miscellaneous Increase Info. | |
| TABLE: | HABITAT |
| Plant Association Groups | Indicates mid seral stages in cool, moist grand fir associations 160 |
| Drought Tolerance | High 23; moderate 34 |
| Soil: Texture, Chemicals | Not for fine or coarse soils;
marginal on moderately fine, acidic, and basic soils 34 Well drained sandy
soils to wet meadows and streamsides 160 In ref. #88: EXPOSURE: Higher slopes and ridges (Eddleman, 1978) SOIL TEXTURE: Medium textured (Eddleman, 1978); nitrogen-fixing 217 |
| Soil Depth | |
| Ave. Precip. Needs | |
| Flooding or High Water Tolerance | Persists on wet sites or
early-seasonally wet sites 34 In ref. #88: Observed on moist, upland fans where soils not strongly saline; well drained (Eddleman, 1978) |
| Soil Stabilization | Can be aggressive; has deep, extensive root system that withstands trampling 23 |
| Palatability and Attractiveness to Animals; Response to Grazing | Forage value worthless to low, may be toxic 23 Poisonous to livestock 159; possibly to humans. Increases with overgrazing and other disturbance 160 Eaten by many insects 173; toxic to cattle and humans 217 |
| Elevation Range | Near sea level 23 to ?? |
| Competitiveness | Highly competitive; sometimes competes with other vegetation that is considered more valuable, for grazing 159 |
| Plasticity | |
| Root System: Rhizomes, Stolons, etc. | Roots are perennial, often woody and with much-branched root crown 23 Rhizomatous 159 |
| Shade Tolerance | Full sun to partial shade 34 |
| TABLE: | CONSERVATION SOWING ON N.F. SITES |
| WCF Cost/Lb. (1997) | $177 73 |
| Sow Rate for. Sowing on National Forest Sites, Lb./Acre | 20 Lb./acre 34 |
| Sowing Method and Date | |
| Miscellaneous |