Schizopetalon of the World

Ihsan Al-Shehbaz


Schizopetalon arcuatum

Basal leaves pinnatisect. Raceme bracts along entire length; in fruit elongated considerably; rachis of fruiting raceme straight. Fruiting pedicels 3–5(–6.5) mm long; divaricate; straight. Petal 12–15 mm long. Nectar glands toothlike; 0.5–0.6 mm long in fruit. Fruit linear; arcuate; smooth, or obscurely torulose; distinctly flattened; not twisted; 4–5.5(–6.5) cm long; 1.6–1.9 mm wide; midvein prominent; valve hairs present; uniform; style 0.1–0.6 mm long. Seeds uniseriate (in one row); yellowish brown; ovate; compressed; 1–1.3 mm long or in diam. Cotyledon oblong; undivided; incumbent.


Schizopetalon bipinnatifidum

Basal leaves pinnatisect. Raceme bracts on basal part of raceme, or along entire length; in fruit elongated considerably; rachis of fruiting raceme straight. Fruiting pedicels 6–10 mm long; strongly recurved; forming a loop. Petal 12–18 mm long. Fruit linear; reflexed, or arcuate; distinctly torulose; not flattened (terete); not twisted; (2.5–)4–5.5 cm long; 1.8–2 mm wide; midvein prominent; valve hairs present; two types, very coarse and small; style 1–2(–3) mm long. Seeds uniseriate (in one row); dark brown; ovate; compressed; 1.6–1.8 mm long or in diam. Cotyledon filiform; undivided; spirally coiled.


Schizopetalon biseriatum

Basal leaves pinnatifid, or pinnatisect. Raceme bracts absent; in fruit elongated considerably; rachis of fruiting raceme flexuous (zig zaged). Fruiting pedicels (3–)6–12(–20) mm long; ascending, or divaricate; straight. Petal 14–20 mm long. Nectar glands toothlike; 0.4–0.6 mm long in fruit. Fruit linear; divaricate, or erect; distinctly torulose; distinctly flattened; not twisted; (2.2–)3–4(–4.8) cm long; 2.2–2.8 mm wide; midvein prominent; valve hairs present; uniform; style 0.1–0.8(–2.2) mm long. Seeds biseriate (in two rows); yellowish brown, or reddish brown; ovate; compressed; 1–1.2 mm long or in diam. Cotyledon oblong; undivided; incumbent.


Schizopetalon brachycarpum

Basal leaves pinnatisect. Raceme bracts along entire length; in fruit elongated considerably; rachis of fruiting raceme straight. Fruiting pedicels 9–20 mm long; strongly recurved; forming a loop, or arcuate. Petal 13–16 mm long. Nectar glands crescent-shaped; 0.05–0.1 mm long in fruit. Fruit narrowly oblong; arcuate; obscurely torulose; subterete (slightly flattened); not twisted; 1–1.5 cm long; 2.5–3 mm wide; midvein obscure; valve hairs present; uniform; style 0.8–1.2 mm long. Seeds uniseriate (in one row); dark brown; oblong; not compressed; 2–2.5 mm long or in diam. Cotyledon oblong; undivided; incumbent.


Schizopetalon corymbosum

Basal leaves pinnatisect. Raceme bracts along entire length; in fruit not elongated; rachis of fruiting raceme straight. Fruiting pedicels 9–13 mm long; divaricate; straight. Petal 10–15 mm long. Nectar glands toothlike; 0.5–0.6 mm long in fruit. Fruit linear; divaricate; distinctly torulose; distinctly flattened, or 4-angled; not twisted; 3–4.7 cm long; 3–3.6 mm wide; midvein prominent; valve hairs present; uniform; style 0.1–0.4 mm long. Seeds uniseriate (in one row); brown; globose; not compressed; 0.9–1.1 mm long or in diam. Cotyledon filiform; bifid to the base; spirally coiled.


Schizopetalon dentatum

Basal leaves sinualte, or pinnatisect, or lyrate-pinnatifd. Raceme bracts along entire length; in fruit elongated considerably; rachis of fruiting raceme straight. Fruiting pedicels (6–)8–15(–20) mm long; strongly recurved, or reflexed; forming a loop, or sigmoid. Petal 18–22 mm long. Nectar glands toothlike; (0.3–)0.4–0.6(–0.7) mm long in fruit. Fruit linear; reflexed, or arcuate, or divaricate; distinctly torulose; subterete (slightly flattened); not twisted; 3.5–5.5(–7) cm long; 1.5–1.8(–2) mm wide; midvein prominent; valve hairs absent, or present; uniform; style 2–6(–8) mm long. Seeds uniseriate (in one row); dark brown, or black; oblong; not compressed; (1.6–)1.8–2 mm long or in diam. Cotyledon oblong; undivided; incumbent.


Schizopetalon maritimum

Basal leaves pinnatisect. Raceme bracts on basal part of raceme, or along entire length; in fruit elongated considerably. Fruiting pedicels (4–)5–9(–17) mm long; divaricate; straight. Petal (12–)14–20 mm long. Nectar glands toothlike; 0.3–0.6 mm long in fruit. Fruit linear; reflexed, or divaricate; distinctly torulose; distinctly flattened, or 4-angled; not twisted; (2.1–)3.5–4.8(–6) cm long; 1.5–1.8(–2.2) mm wide; midvein prominent; valve hairs absent; uniform; style (0.2–)1–1.7(–2) mm long. Seeds uniseriate (in one row); brown; globose; not compressed; 0.8–0.9(–1.2) mm long or in diam. Cotyledon filiform; bifid to the base; spirally coiled.


Schizopetalon rupestre

Basal leaves sinuate-dentate, or pinnatifid. Raceme bracts absent; in fruit elongated considerably; rachis of fruiting raceme flexuous (zig zaged). Fruiting pedicels (2–)3–8(–14) mm long; divaricate, or strongly recurved; straight, or forming a loop. Petal (12–)14–18 mm long. Nectar glands crescent-shaped; 0.05–0.1 mm long in fruit. Fruit linear; spreading, or reflexed; smooth; subterete (slightly flattened); twisted (tortous); 2.2–4.5(–5.8) cm long; 1.6–2.5(–2.8) mm wide; valve hairs present; uniform; style 0.5–1(–3) mm long. Seeds uniseriate (in one row); brown; oblong; not compressed; 1.6–2(–2.4) mm long or in diam. Cotyledon oblong; undivided; incumbent.


Schizopetalon tenuifolium

Basal leaves pinnatisect. Raceme bracts absent, or on basal part of raceme; in fruit elongated considerably; rachis of fruiting raceme straight. Fruiting pedicels (5–)6–8.5(–12) mm long; divaricate; straight. Petal 14–17 mm long. Nectar glands toothlike; 0.3–0.4 mm long in fruit. Fruit linear; arcuate; distinctly torulose; distinctly flattened; not twisted; 3.5–5(–5.5) cm long; 1.5–1.6(–1.75) mm wide; midvein obscure; valve hairs present; uniform; style 0.5–2 mm long. Seeds uniseriate (in one row); brown; ovate; compressed; 1–1.2 mm long or in diam. Cotyledon oblong; undivided; incumbent.


Schizopetalon walkeri

Basal leaves sinualte, or pinnatifid. Raceme bracts along entire length; in fruit elongated considerably; rachis of fruiting raceme straight. Fruiting pedicels (4–)6–15(–23) mm long; divaricate, or reflexed; straight, or arcuate. Petal (14–)16–20 mm long. Nectar glands toothlike; 0.4–0.8 mm long in fruit. Fruit linear; reflexed, or divaricate; distinctly torulose; not flattened (terete); not twisted; (1.9–)3–5(–6) cm long; 1.5–2(–2.2) mm wide; midvein prominent, or obscure; valve hairs absent, or present; uniform; style (1–)1.5–2.5(–3) mm long. Seeds uniseriate (in one row); brown; globose; not compressed; 0.9–1.2(–1.3) mm long or in diam. Cotyledon filiform; bifid to the base; spirally coiled.


Cite this publication as: 'Al-Shehbaz, Ihsan (2009 onwards). Brassicaceae of the World: Descriptions, Illustrations, Identification, and Information Retrieval. Version: 29 May 2009. http://flora.huh.harvard.edu/Brassicaceae/'. Dallwitz (1980) and Dallwitz, Paine and Zurcher (1993, 1995, 2000) should also be cited (see References).

Index