Persicaria sect. Cephalophilon

(Meisner) H. Gross

Bull. Acad. Int. Géogr. Bot. 4: 27. 1913.

Basionym: Polygonum sect. Cephalophilon Meisner in N. Wallich, Pl. Asiat. Rar. 3: 59. 1832
Treatment appears in FNA Volume 5. Treatment on page 579. Mentioned on page 574, 581.

Stems prostrate or decumbent to ascending or erect, branched, unarmed. Leaves: ocrea usually chartaceous, rarely coriaceous proximally and chartaceous distally, margins eciliate or ciliate; petiole usually winged, auriculate; blade usually with dark triangular or lunate blotch adaxially, broadly elliptic to ovate, base cordate, rounded, truncate, or cuneate, margins entire. Inflorescences terminal or terminal and axillary, capitate, uninterrupted. Flowers homostylous, articulation swollen or not; perianth urceolate or campanulate; tepals (4–) 5, connate 1/3–1/2 their length; stamens (5–) 8; styles deciduous, 2–3, included, spreading.

Distribution

Introduced; Asia, also in Europe, Africa, Pacific Islands

Discussion

Species ca. 16 (3 in the flora).

Selected References

None.

Key

1 Achenes biconvex; abaxial surface of leaf blades glandular-punctate Persicaria nepalensis
1 Achenes 3-gonous; abaxial surface of leaf blades not glandular-punctate > 2
2 Leaf blade margins ciliate with reddish, multicellular hairs; ocreae lanate; peduncles glabrous or stipitate-glandular distally Persicaria capitata
2 Leaf blade margins glabrous or antrorsely scabrous with whitish hairs; ocreae glabrous or pubescent; peduncles stipitate-glandular along entire length Persicaria chinensis

"/2" is not declared as a valid unit of measurement for this property.

dark-brown;black +
exserted +  and included +
spheroidal +, 2-3-gonous +, biconvex +  and discoid +
red +, pink +  and yellow +
elliptic +  and ovate +
not +  and swollen +
Harold R. Hinds† +  and Craig C. Freeman +
(Meisner) H. Gross +
cuneate +, truncate +, rounded +  and cordate +
Polygonum sect. Cephalophilon +
broadly elliptic;ovate +
lunate +, triangular +  and dark +
foliaceous +  and perfoliate +
scale-like +
just below the soil surface or and above the soil surface +  and spreading +
Asia +, also in Europe +, Africa +  and Pacific Islands +
adnate +, connate +  and distinct +
disarticulating +  and solid +
decumbent to erect +  and prostrate +
unwinged +  and winged +
black +, red +, brown +  and yellowish +
exserted +  and included +
pubescent +  and glabrous +
spheroidal +, 4-gonous +, lenticular +, biconvex +, discoid +, 3-gonous +  and 2-gonous +
capitate +, paniclelike +  and spikelike +
nonmembranous +
sessile +  and petiolate +
deciduous +
ciliate +  and eciliate +
swollen +
reddish +, brown +  and tan +
disintegrating +
deciduous +  and persistent +
scabrous +  and variously pubescent +
coriaceous +
anatropous +, , +  and orthotropous +
accrescent +
spreading;erect +
purple;red;purple;red;roseate;greenish white;white +
campanulate +  and urceolate +
nonaccrescent +  and accrescent +
auriculate +
(2-)3(-4)-carpellate +
Bull. Acad. Int. Géogr. Bot. +
slender;stout +
unarmed +  and branched +
scandent +  and prostrate +
decumbent to ascending or erect +  and prostrate +
, +  and erect +
pubescent +  and glabrous +
penicillate +, fimbriate +  and capitate +
deciduous +  and persistent +
2-lobed +  and cylindric +
coriaceous +  and membranous +
deciduous +
connate +  and distinct +
spreading;erect +
Persicaria sect. Cephalophilon +
Persicaria +
section +
1/3 +  and 1/2 +
lobed +  and laciniate +
coriaceous +
persistent +
membranous +
pubescent +  and glabrous +
stoloniferous +, rhizomatous +, fibrous-rooted +  and taprooted +
annual +  and perennial +
12 +, 11 +  and 10 +