Castilleja indivisa, commonly known as Texas Indian paintbrush or entireleaf Indian paintbrush, is a hemiparasitic annual wildflower native to Texas, Louisiana, and Oklahoma in the United States. There are historical records of the species formerly growing in Arkansas, and reports of naturalized populations in Florida and Alabama.Biota of North America Program 2014 county distribution map The bright red leaf-like bracts surrounding the white to greenish flowers make the plant look like a ragged brush dipped in red paint. They sometimes produce a light yellow or pure white variation mixed in with the reds. Each plant typically grows 30 - in height. The leaves are long and stalkless. The roots grow until they reach the roots of other plants, mainly grasses, and then penetrate the roots of the "host" plant to obtain a portion of their needed nutrients (known as semi- or hemiparasitic). Texas paintbrush typically blooms in early to mid-spring and thrives in well-drained areas with full sun. They can be seen along highways and in fields, complementing the deep blue of the bluebonnets.
No narrative description available for this taxon yet.
Compounds documented for Castilleja indivisa across natural-product and food-composition databases — not just the ~150 nutrients on a classic label ("nutritional dark matter").
Compound class profile2 classes
Cinnamic acids and derivatives $ Phenylethanoids1
Iridoids monoterpenoids1
Documented compounds2 total
Compound
Class
Amount
Source
Shanzhiside
present
LOTUS
Verbascoside
present
LOTUS
05DNA & barcoding4 specimens
A DNA barcode is a short, standardised stretch of genes that works like a fingerprint — enough to tell one species from another. Below is the molecular trace Castilleja indivisa has left across the world's sequence archives.
At a glance
DNA specimens4
Marker genes5
GenBank sequences4
eDNA detections1
Countries1
The DNA barcodea real sequence read deposited for this species
★ the standard DNA barcode for this group — the short region actually read to tell this species apart. The rest are extra genes sequenced along the way.
★matK1★rbcL2★ITS1★ITS2trnH-psbA
plant barcodefungal barcodemarker
06Genome at a glanceCCDB
The complete instruction manualCastilleja indivisa carries — its genome. We read it from three angles — how big it is, how the DNA is packed into chromosomes, and how completely it has been sequenced — and explain how to read each value as you go.
Chromosomes & ploidyhow the DNA is packaged
2n is the full chromosome count in a normal body cell; n is a gamete (egg or sperm), which carries half. Ploidy is how many complete chromosome sets each cell holds — 2× (diploid) is typical for animals, while higher levels (polyploidy) are common in plants. Click any value below to see the underlying records and sources.
Chromosomes2n = 24 n = 12
Ploidydiploid inferred
Chromosome-count records — grouped by value · 2n = full set, n = gamete · click a value for sources & references
n 121×CCDB · book-ipcn67-71
CCDB · book-ipcn67-71 — HECKARD, L.R. 1968. Chromosome numbers and polyploidy in Castilleja (Scrophulariaceae). Brittonia 20: 212-226.
Ploidy records — measured levels and diploid/polyploid inferences · click for sources
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Coordinate accuracy88% within 1 km
≤100 m 10 775≤1 km 1 919≤10 km 717>10 km 991
14 402 georeferenced · 3 169 without coordinates
Open the mapobservation + sensor17 571
Museum / Voucheredphysical evidence
Backed by a physical specimen — a herbarium sheet, sample or voucher held in a collection. “Vouchered” means supported by material evidence, not just an observation.
Coordinate accuracy32% within 1 km
≤100 m 33≤1 km 163≤10 km 346>10 km 70
612 georeferenced · 302 without coordinates
Open the institutions mapphysical evidence914
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
10Collections & institutions
Holding institutions39 of 53 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Fort Worth, US
310
Austin, US
106
BAYLUlocation not on record
103
Bronx, US
77
Denton, US
38
Wuzhou, CN
35
Chapel Hill, US
23
Texas Lutheran Universitylocation not on record
23
Tampa, US
22
Stephenville, US
21
EL PASO, US
18
Saint Louis, US
10
Chongqing Museumlocation not on record
10
University of Stellenboschlocation not on record
8
Lubbock, US
8
Mexico City, MX
8
Riverside, US
8
Flagstaff, US
6
Little Rock, US
6
Bloomington, US
6
Bangkok, TH
5
US
4
San Angelo, US
4
ASUlocation not on record
4
Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record
4
WTUlocation not on record
3
Phoenix, US
3
Claremont, US
3
Davis, US
3
Columbia, US
3
Burlington, US
3
Waverly, US
2
Pullman, US
2
AUAlocation not on record
2
Tuscaloosa, US
2
Provo, US
1
Pocatello, US
1
Jena Microbial Resource Collectionlocation not on record
1
Denver, US
1
Smithsonian Institution, National Museum of Natural Historylocation not on record
1
Mexico City, MX
1
San Luis Obispo, US
1
Clemson, US
1
Moscow, US
1
Miami, US
1
DOI/NPS, Greenbelt Parklocation not on record
1
China Agricultural Universitylocation not on record
1
Canadian Department of Agriculturelocation not on record
1
Toronto, CA
1
Jackson, US
1
Philadelphia, US
1
Rocky Mountain Biological Laboratorylocation not on record
1
Boise, US
1
53 institutions · 911 of 914 vouchered records shown · 3 without an institution code
09Environmental DNA1 detections
Where the DNA of Castilleja indivisa was picked up in samples of water, soil or air — nobody saw the organism, only its DNA left behind. A trace is a clue that the species was near, not a confirmed sighting.
Signal
Detections DNA found1
Studies independent surveys1
Countries1
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 1 detections have coordinates
Open the map1 country0
How strong is each trace?
DNA read depthRead counts were not reported for this species — the map shows presence only, not how strong each trace was.
Modelled climatemodelled
−15°Ctemperature across detection sites+40°C
Temperature median15.9 °C 15.9–15.9
Seasonal swing summer↔winter18.6 °C
Max temp (day)22.2 °C
Min temp (night)11.2 °C
Precipitation68.0 mm/mo
Air humidity57.6 %
Moisture balance-44.2 mm/mo
Vapour deficit764 Pa
Wind speed4.10 m/s
Cloud cover35.1 %
CHELSA 1981–2010, ~9 km grid, at location & month of 1 detection point · median with p10–p90 · reflects where sampling happened, not only the true niche
How to read this: each dot is one detection of this species' DNA in an environmental sample. The confidence meter weighs how many independent studies and places back up the signal — one detection in one study is a hint; many across several studies is solid. Records dated before 2008 (when eDNA methods began) are treated as likely mislabeled and left off the map.