Flora of North America species comparison

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Styphnolobium

necklacepod, pagoda tree
Habit Trees or shrubs, unarmed.
Stems

erect, glabrous or moderately pubescent, glabrescent;

bark smooth, fissured, or flakey.
Leaves

alternate, odd-pinnate;

stipules present, caducous;

petiolate;

leaflets (7–)11–19+, opposite proximally and alternate distally, all opposite, or all alternate, stipels present, blade margins entire, surfaces glabrous or pubescent.
Inflorescences

5–100+-flowered, axillary or terminal, racemes or panicles;

bracts and bracteoles present, caducous.
Flowers

papilionaceous;

calyx zygomorphic, campanulate or hip-shaped, truncate, lobes 5;

corolla usually white or yellow, rarely pink or purple [cream];

stamens 10, distinct;

anthers basifixed, dehiscing apically;

ovary sericeous;

style glabrous;

stigma attenuate, terminal.
Fruits

legumes, stipitate, straight to curved, moniliform [torulose], indehiscent, fleshy, glabrescent.
Seeds

1–5(–8), black, compressed, subreniform to oblong;

hilum lateral.
x

= 14.

Styphnolobium
Distribution
from USDA
c United States; e United States; Mexico; Central America; nw South America (Colombia); Asia [Introduced elsewhere in temperate and subtropical regions]
[BONAP county map]
Discussion

Species ca. 9 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Leaflet blades narrow to broadly elliptic or obovate; inflorescences racemes, axillary; ovaries densely sericeous; hairs of petioles, inflorescence axes, and pedicels translucent to white; flowering Mar–May.
S. affine
1. Leaflet blades usually lanceolate to ovate, sometimes elliptic; inflorescences panicles, terminal; ovaries sparsely sericeous; hairs of petioles, inflorescence axes, and pedicels white, translucent, brown, and/or golden brown; flowering Jun–Sep.
S. japonicum
Source FNA vol. 11. Authors: James C. Sugar, Alexander Krings.
Parent taxa Fabaceae > subfam. Faboideae
Subordinate taxa
S. affine, S. japonicum
Name authority Schott: Wiener Z. Kunst 1830(3): 844. (1830)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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