Flora of North America species comparison

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Crassula argentea

Crassula drummondii

jade plant

small-leaf pygmyweed
Habit Plants terrestrial, perennial. Plants terrestrial or subaquatic, annual.
Stems

erect, silvery in age, moderately branched, 30–50 cm.

decumbent or erect, greenish red in age, diffusely branched, to 10 cm.
Leaf

blades obovate, 20–70 mm, apex obtuse to retuse.

blades narrow-lanceolate, 1.5–3 mm, apex obtuse.
Inflorescences

compact, flowers 2 per node.

lax;

flowers 1 per node.
Pedicels

8–12 mm.

0.5–3 mm.
Flowers

4-merous;

sepals (erect), triangular, 0.5 mm, apex acute;

petals oblong-lanceolate, ca. 10 mm.

4-merous;

sepals triangular-ovate, 0.4–0.6 mm, apex obtuse;

petals ovate, 1.3–1.5 mm.
Seeds

not seen.

oblong to ellipsoid, 0.2–0.4(–0.5) × 0.1–0.3 mm, prickly-papillate, dull, smooth.
Follicles

erect, seed number not known, ovoid;

old follicles erect, boat-shaped.

ascending, 9–15-seeded, oblong;

old follicles spreading, flat.

Crassula argentea

Crassula drummondii
Phenology Flowering Mar–Jun. Flowering spring.
Habitat Edges of lagoons, sand dunes, disturbed areas Terrestrial or subaquatic, margins of ponds and streams
Elevation 0-100 m (0-300 ft) 0-50 m (0-200 ft)
Distribution
from FNA
CA; s Africa [Introduced in North America]
from FNA
CO; KS; SC; TX; South America
[BONAP county map]
Discussion

Crassula argentea is reported from Los Angeles and San Diego counties.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

M. Bywater and G. E. Wickens (1984) cited Crassula drummondii also from Arizona; I have referred their specimen (Spring Valley, near Sitgreave Mountain, Lemmon in 1884) to C. viridis (R. V. Moran 1992b).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 8, p. 155. FNA vol. 8, p. 154.
Parent taxa Crassulaceae > Crassula Crassulaceae > Crassula
Sibling taxa
C. aquatica, C. colligata, C. connata, C. drummondii, C. longipes, C. multicava, C. solieri, C. tetragona, C. tillaea, C. viridis
C. aquatica, C. argentea, C. colligata, C. connata, C. longipes, C. multicava, C. solieri, C. tetragona, C. tillaea, C. viridis
Synonyms Tillaea drummondii
Name authority Thunberg: Nova Acta Phys.-Med. Acad. Caes. Leop.-Carol. Nat. Cur. 6: 329, 337. 1778 , (Torrey & A. Gray) Fedde: Just’s Bot. Jahresber. 31(1): 829. (1904)
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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