familyAsteraceae
tribeAsteraceae tribe Heliantheae
subtribeAsteraceae (tribe Heliantheae) subtribe Pectidinae
genusPectis
speciesPectis angustifolia
varietyPectis angustifolia var. fastigiata

Pectis angustifolia var. fastigiata

(A. Gray) D. J. Keil

Rhodora 79: 60. 1977.

David J. Keil
Common names: Texas chinchweed
Endemic
Basionym: Pectis fastigiata A. Gray Mem. Amer. Acad. Arts, n. s. 4: 62. 1849
Synonyms: Pectis texana Cory
Treatment appears in FNA Volume 21. Treatment on page 229. Mentioned on page 228.

Annuals or perennials, 5–15 cm; herbage spicy-scented. Leaves 10–40 × 1–2 mm, bases of distal blades not notably expanded. Peduncles 3–30 mm. Phyllaries narrowly oblanceolate, 2.5–4.5 mm, widest near apices, each with a conspicuous, subterminal oil-gland 0.5–1 mm plus 1 or 2 pairs of smaller submarginal oil-glands. Cypselae 2.5–3.5 mm; pappi usually of 1–7 bristles or awns, sometimes coroniform, usually less than 1 mm. 2n = 24.


Phenology: Flowering Jun–Nov.
Habitat: Open areas in grasslands and open woodlands, mostly on shallow limestone soils
Elevation: 100–700 m

Distribution

V21-553-distribution-map.gif

Tex.

Discussion

Variety fastigiata is known only from the Edwards Plateau region of central Texas, mostly on limestone soils. It appears to intergrade in the western portion of its range with var. angustifolia.

Selected References

None.

Lower Taxa

None.

"widest" is not a number.

... more about "Pectis angustifolia var. fastigiata"
RDF feed
2n chromosome quantity
24 +
Anther base shape
not tailed +, rounded +  and obtuse +
Anther dehiscence
introrse +
Anther fusion
connate +
Anther theca coloration
darkened +  and pale +
Apex fusion
connate +  and distinct +
Apex growth form or texture
herbaceous +
Apex size
subequal +
Apex texture
scarious +
Apical appendage presence
absent +
Apical appendage shape
usually ovate +  and lanceolate +
Appendage pubescence
hirsute +
Appendage relief
papillate +
Appendage shape
usually deltate +  and lanceolate +
Array architecture
cymiform +
Array architecture or arrangement
congested +
Array development
indeterminate +  and determinate +
Author
David J. Keil +
Authority
(A. Gray) D. J. Keil +
Awn pubescence or relief
scabrid +
Awn quantity
0 +  and 7 +
Band architecture
continuous +
Band quantity
1 +
Base shape
decurrent +
Base size
expanded +
Basionyms
Pectis fastigiata +
Blade architecture
compound +  and simple +
Blade arrangement or course or shape
linear +
Blade shape
obovate;oblong;obovate;oblong;oblanceolate;linear to elliptic +
Body architecture
winged;ribbed;winged;ribbed +
Body architecture or pubescence or relief
smooth +
Body relief
tuberculate +  and rugose +
Bractlet quantity
1;22 +
Branch arrangement or course or shape
linear +
Branch structure in adjective form
stigmatic +
Bristle architecture
barbellulate +  and barbellate +
Bristle quantity
1;7 +
Bristle shape
Plumose (?) +
Bristle some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Calyculus presence
absent +
Calyculus quantity
Of 1 (22 bractlets) +
Common name
Texas chinchweed +
Corolla architecture
zygomorphic +
Corolla atypical some measurement
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Corolla coloration
yellow +  and reddened +
Corolla some measurement
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Cypsela architecture
monomorphic +
Cypsela architecture or shape
beaked +
Cypsela growth form
dimorphic +
Cypsela pubescence
strigillose +
Cypsela shape
cylindric +  and narrowly clavate ribbed or angled +
Cypsela some measurement
2.5mm;3.5mm +
Disc-floret atypical quantity
7 (10) +
Disc-floret quantity
10 (20) +
Disc-floret reproduction
bisexual +
Disc floret architecture
staminate +
Disc floret reproduction
fertile +  and bisexual +
Distribution
Tex. +
Elevation
100–700 m +
Embryo course
straight +
Face pubescence
glabrous +
Filament fusion
distinct +
Floret architecture
pistillate +, staminate +  and neuter +
Floret atypical quantity
5;15 +
Floret position
proximal +
Floret quantity
1;5 +
Floret reproduction
bisexual +
Fruit architecture
winged +  and beaked +
Fruit condition or texture
dry +
Fruit density
dispersed +
Funnelform shape
cylindric +
Glomerule arrangement
singly +
Habitat
Open areas in grasslands and open woodlands, mostly on shallow limestone soils +
Head architecture
cymiform +, corymbiform +, discoid +  and radiate +
Head architecture or arrangement
radiate +
Head arrangement
in congested to open , cymiform arrays +  and singly +
Head development
indeterminate +
Head reproduction
homogamous +  and heterogamous +
Herbage odor
spicy-scented +
Illustration copyright
Flora of North America Association +
Illustrator
John Myers +
Individual head architecture
each +  and sessile +
Involucre diameter
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Involucre position relational
surrounding +
Involucre shape
cylindric;campanulate +
Leaf architecture
sessile +
Leaf arrangement
opposite +
Leaf arrangement or course or shape
linear +
Leaf length
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Leaf position
cauline +
Leaf width
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Line quantity
2 +
Lobe atypical quantity
4 (5) +
Lobe quantity
5 (?) +
Lobe shape
deltate +  and lanceovate +
Margin architecture or pubescence or shape
setose-ciliate +
Margin architecture or shape
dentate to pinnatifid or palmatifid +  and entire +
Number of lower taxa
0 +
Ovary architecture
2-carpellate +
Ovary architecture or structure in adjective form
1-locular +
Ovary position
inferior +
Ovule fixation
attached +
Ovule orientation
anatropous +
Ovule quantity
1 +
Pair quantity
2 (5) +
Pair some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Pappus duration
persistent +
Pappus life cycle
falling +
Pappus presence
absent +
Pappus shape
coroniform +
Pappus some measurement
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Peduncle some measurement
0.3 cm3 mm <br />0.003 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Pericarp fragility
tough +
Pericarp width
thick +
Peripheral floret presence
absent +
Peripheral floret quantity
In 1 (3+ series) +
Petal fusion
connate +
Phenology
Flowering Jun–Nov. +
Phyllary atypical quantity
15 (21) +
Phyllary duration
persistent +
Phyllary fusion
distinct +
Phyllary length
0.25 cm2.5 mm <br />0.0025 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
Phyllary life cycle
falling +
Phyllary quantity
2 +  and 1 +
Phyllary shape
Oblanceolate (?) +
Phyllary size
unequal +
Phyllary some measurement
0.25 cm2.5 mm <br />0.0025 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Phyllary texture
Herbaceous (Chartaceous) +
Publication title
Rhodora +
Publication year
1977 +
Ray-floret architecture
pistillate +
Ray-floret atypical quantity
15 (21) +
Ray-floret presence
absent +
Ray-floret quantity
8 (?) +
Ray-floret reproduction
fertile +
Receptacle architecture
epaleate +
Receptacle pubescence
bearing subulate enations +, hairy +  and bristly +
Receptacle relief
pitted +  and smooth +
Receptacle shape
flat;hemispheric +
Reference
None +
Root texture
fibrous +
Scale quantity
5 +  and 20 +
Seed architecture
exalbuminous +
Seed quantity
1 +
Sepal variability
modifed +
Series atypical quantity
1 (2) +
Series quantity
1 +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V19-20-21/V21 553.xml +
Special status
Endemic +
Stamen arrangement
alternate +
Stamen atypical quantity
4 (5) +
Stamen quantity
5 +
Stem architecture
branched +  and simple to much +
Stem orientation
ascending +  and erect +
Stem pubescence
puberulent +  and glabrous +
Style-branch architecture
appendaged +  and truncate +
Style architecture
2-branched +
Style pubescence
hirsutulous +  and glabrous +
Style quantity
1 +
Style relief
papillate +
Subterminal gland-oil distance
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Subterminal gland-oil prominence
conspicuous +
Synonyms
Pectis texana +
Taxon family
Asteraceae +
Taxon name
Pectis angustifolia var. fastigiata +
Taxon parent
Pectis angustifolia +
Taxon rank
variety +
Throat shape
cylindric +
Tube height or length or size
shorter +
Tube length or size
much longer +
Ultimate margin shape
toothed +  and entire +
Volume
Volume 21 +
Whole-organism duration
perennial +  and annual +
Whole-organism some measurement
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Whole organism atypical some measurement
50 cm500 mm <br />0.5 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
Whole organism average some measurement
200cm (5cm) +
Whole organism growth form
shrub +  and subshrub +
Whole organism some measurement
5cm (50cm) +
X chromosome quantity
12 +