yellow starthistle
Centaurea solstitialis L.
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| Taxonomic Rank: Magnoliopsida > Asterales > Asteraceae > Centaurea |
| Common Name Synonym(s): yellow star thistle, yellow star-thistle |
| Taxonomic Synonym(s): Leucantha solstitialis L. |
| Category: Plants: Forbs/Herbs |
83 Records | View Images as Host | View Thumbnails |
| Image | Descriptor | Description |
|---|---|---|
| 0022044 | Flower(s) | |
| 0022045 | Flower(s) | |
| 0022046 | Flower(s) | |
| 0022047 | Plant(s) | in flower |
| 0022048 | Plant(s) | |
| 0022049 | Plant(s) | |
| 0022050 | Stand | |
| 0024049 | Survey | a Russian entomologist examining a seed head |
| 1148062 | Plant(s) | |
| 1299118 | Flower(s) | |
| 1316001 | Flower(s) | |
| 1317078 | Flower(s) | |
| 1350003 | Plant(s) | |
| 1350004 | Flower(s) | |
| 1350005 | Fruit(s) | |
| 1350006 | Plant(s) | Seedling stage |
| 1350007 | Plant(s) | Rosette stage |
| 1350008 | Plant(s) | Bolting stage |
| 1350009 | Plant(s) | Small buds with yellow-green spines begin to be visible at the top. |
| 1350010 | Plant(s) | Spines protrude more than half of the bud length. |
| 1350011 | Plant(s) | Spines are equal to or greater than 45° angle from stem |
| 1350012 | Plant(s) | Spines are straw-colored and equal to or greater than 90° angle from stem. |
| 1350013 | Plant(s) | Flowering stage |
| 1350014 | Plant(s) | Seed formation stage |
| 1350015 | Plant(s) | Mature stage |
| 1350016 | Plant(s) | Seed dissemination stage |
| 1350017 | Plant(s) | Senescence stage |
| 1350037 | Plant(s) | |
| 1350038 | Infestation | example of yellow starthistle infestation suitable for a biological control program |
| 1350039 | Biological Control | collecting yellow starthistle biocontrol agents |
| 1350042 | Monitoring | monitoring for biocontrol agents |
| 1350043 | Monitoring | monitoring a infestation |
| 1355033 | Biological Control | Three weeks after yellow starthistle was inoculated with rust spores, ARS plant pathologist Bill Bruckart (left) and California Department of Food and Agriculture plant pathologist Dale Woods inspect one of 20 test sites to learn about the pathogen's performance. |
| 1355034 | Biological Control | California Department of Food and Agriculture lab assistant Viola Popescu uses a cyclone spore collector developed at the Fort Detrick lab to harvest inoculum from plants at the CDFA greenhouse in Sacramento. |
| 1355035 | Biological Control | Small, rust-colored spots on starthistle leaves. The presence of these spots indicates that the first field releases of rust spores on starthistle are a success. |
| 1355036 | Biological Control | Morning dew on a yellow starthistle leaf. Evening inoculations with rust spores (from Puccinia jaceae var. solstitialis) are made to catch the overnight dew needed for spore germination and infection. |
| 1355037 | Flower(s) | |
| 1391535 | Seedling(s) | |
| 1459652 | Infestation | |
| 1459653 | Flower(s) | |
| 1459654 | Flower(s) | |
| 1459655 | Flower(s) | |
| 1459656 | Plant(s) | |
| 1459657 | Infestation | |
| 1459658 | Infestation | |
| 1459659 | Infestation | |
| 1459660 | Feature(s) | winged stem margins |
| 1459661 | Foliage | |
| 1459662 | Feature(s) | Spines |
| 1459663 | Feature(s) | Spines |
| 1459664 | Feature(s) | Spines |
| 1459665 | Infestation | |
| 1459666 | Plant(s) | |
| 1459667 | Plant(s) | Q-tips |
| 1459668 | Infestation | |
| 1459669 | Plant(s) | |
| 1459670 | Infestation | |
| 1459671 | Plant(s) | Rosette |
| 1459672 | Infestation | |
| 1624054 | Plant(s) | Native of Mediterranean region, is crowding out cattle forage as well as rare species such as this mariposa lily in Hells Canyon. |
| 1624057 | Dispersal | Invasive plants can be spread far and wide by people and as hitchhikers on vehicles. |
| 1624060 | Flower(s) | Introduced from southern Europe and the Mediterranean region in the mid-1800s, is a serious rangeland weed throughout the western United States. |
| 5229088 | Foliage | |
| 5229089 | Fruit(s) | |
| 5229090 | Flower(s) | |
| 5229091 | Flower(s) | |
| 5306095 | Diagram or Graphic | Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 3: 560. |
| 5374358 | Infestation | |
| 5374359 | Plant(s) | in flower |
| 5374360 | Seedling(s) | |
| 5391594 | Flower(s) | |
| 5391595 | Fruit(s) | |
| 5391596 | Stem(s) | |
| 5392039 | Plant(s) | A large plant |
| 5392040 | Infestation | A dreadful patch |
| 5392041 | Infestation | Roadside |
| 5392042 | Flower(s) | Q-tip stage |
| 5400993 | Flower(s) | |
| 5400994 | Stem(s) | |
| 5400995 | Flower(s) | |
| 5400996 | Flower(s) | |
| 5400997 | Plant(s) | |
| 5400998 | Foliage |
