General Information

COMMON NAMES: Arrowhead Vine, Arrowhead Plant, Goosefoot Plant GLOBAL DISTRIBUTION: NATIVE Mexico - Costa Rica COOK ISLANDS STATUS: Introduced - Recent, Naturalised - vegetatively; S.Group - widespread; N.Group - rare; Land, lowlands SIGNIFICANCE LIST: Ornamental leaves; Weed - moderate KEY FEATURES: Climbing plant with subdivided leaves. LEAVES to 25x50cm (LxW), dark gree above and pale green below, stalk to 60cm; LEAFLETS 7-11 (3 primary + 2-4 on each lateral), central without stalk oval to 25x12cm, laterals stalked and asymmetrical to 22x10cm. FLOWERS in axil. SIMILAR SPECIES: Cook Islands plants appear to be Syngonium podophyllum Albolineatum which the International Aroid Society accept as the species Syngonium angustatum. If it is not a separate species then Syngonium angustatum Schott 1858 (Mexico - Costa Rica) would become a synonym of Syngonium podophyllum Schott 1851 (Mexico - Brazil - Bolivia).

Cook Islands Distribution

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Southern Group: Present    Makatea: Present
RR	MG	AT	MK	MT	AK	PL	TK	MN
++++	++	++++	P	-	P	-	-	-

Northern Group: Present
TN	MH	RK	PK	NS	SW
+	-	-	-	-	-

Syngonium angustatum Schott. 1858
SYNONYMS: Syngonium podophyllum 'Albolineatum' [we follow Croat 1981 in separating 'Albolineatum' as Syngonium angustatum Schott 1858 (Mexico - Costa Rica) from the variable Syngonium podophyllum Schott 1851 (Mexico - Brazil - Bolivia).]

TAXONOMY: PLANTAE; ANTHOPHYTA (=Angiospermae); LILIOPSIDA (=Monocotyledones); ARECIDAE; Arales; ARACEAE

SIGNIFICANCE NOTES -
POSITIVE SIGNIFICANCE: Ornamental leaves
NEGATIVE SIGNIFICANCE: Weed - moderate. Comments: NBSAP - Mauke (5 of 10 weeds)

IDENTIFICATION: Climbing plant with divided leaves. STEMS not glaucous, with pale raised transverse-lines. JUVENILE LEAVES undivided, heart-shaped, to 6cm, dark green with grey-green along principal veins. SUB-ADULT LEAVES arrow-like or with wide-oval basal lobes and anterior one oval. ADULT LEAVES dark green above, pale green below, strongly subdivided; leaflets 7-11 (3 primary + 4-8 secondary), CENTRL oval, symmetrical to 25x12cm, LATERALS on stalk to 5cm, asymmetrical to 22x10cm, each with 2-3 ears/2° leaflets up to 15x7cm; main stalk 60cm, groove 50%, medial ridge sharp. FLOWERS (from lit.) axillary, 7, stalk glaucous and almost 3-sided; SPATHE TUBE oval, green and glaucous, 5x3cm; BLADE cream 9x4cm; (from RRspm.) SPADIX basal pistillate section 3x1cm, greenish, flowers ~hexagonal; SPADIX staminate section, 7x2cm, pale yellow, flowers not fused, apex not notched.

Vouchers:
None Recorded.

References:
Special Reference: Croat 1981 A Revision of Syngonium (Araceae). Ann. Missouri Bot. Gard. 68:565-651, also see Website of International Aroid Society at www.aroid.org.

p.1089 Hortus 3rd
p.1133 Royal Hort. Soc. Index of Garden Plants

Data Update History (information):
zTX, zB02, zM03a, zD02

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