Mentioned on page 219. Perennials, 5–250 cm; taprooted, often producing offshoots connected by slender rhizomes. Stems 1–5, usually erect, sometimes decumbent
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rarely in 5 distinct rows, erect-spreading or somewhat secund when dry, erect-spreading to spreading when moist, lanceolate to ovatelanceolate, 1-stratose;
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proximally pectinate and/or ciliate). Phyllaries falling or persistent, 1–6 in 1 series (each partly enveloping a ray cypsela, commonly with simple and/or
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rounded, abruptly or gradually beak, smooth, glabrous; beak 0.1–1.8 mm, usually more than 5 mm, orifice entire. Stigmas 3. Achenes trigonous; style deciduous
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obovate-spatulate, 1.5–6.5 mm, proximal leaves much smaller; base short to long-decurrent; margins plane, green, reddish-brown, or brown, 1-stratose or 2-stratose
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or disappear after the development of the gametophores. Stems erect, to 1.5 cm. Leaves ovate or lanceolate, erect, three-ranked and appressed or spreading
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Involucres usually turbinate, obconic, or cylindric, sometimes hemispheric, (5–15 ×) 1.5–15 mm. Phyllaries 12–60+ in (2–) 3–7 series (in vertical ranks or spirals
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sometimes sparsely pubescent, 1-year old deep reddish-brown, older gray; thorns on twigs usually numerous, usually recurved, 1-year old shiny, dark-brown
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cylindric, usually not indurate, variably hairy but not setose; mericarps 5–25, 1-celled follicle, adherent to adjacent mericarps and persistent on their
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alternate; sessile; blades ovate, lanceolate, or oblanceolate to linear, sometimes 1–2-pinnatifid, ultimate margins toothed or entire, faces glabrous or hirsute
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with 3–5 (–6) spikes; proximal nonbasal bracts leaflike or bladeless, long-sheathing; lateral spikes pistillate, frequently basal, sometimes with 1–2 staminate
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Involucres obconic to turbinate or campanulate, (3–9.5 ×) 2–8 mm. Phyllaries 15–30 in (3–) 4–6 series, 1-nerved (midnerves usually barely evident; flat to
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mealy; sepals usually spreading to reflexed; pyrenes 1–5. North America, Mexico, in Europe Species 7 (5 in the flora). Members of ser. Crus-galli are common
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Capsule stegocarpic [cleistocarpic]. Seta 0.4–1.5 cm. Theca cylindric, ovate or elliptic ca. 1–3 mm, annulus of 1–4 rows of vesiculose cells, persistent or
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less than 1 cm. On long shoots (and all leaves on clonal sucker shoots in their first year), neoformed leaves are produced with internodes of 2 cm or more
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tetragona, Crassula tillaea, Crassula viridis Linnaeus Sp. Pl. 1: 282. 1753. , Gen. Pl. ed. 5, 136. 1754 ,. Reid V. Moran Common names: Pygmyweed Latin crassus thick and
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or perennial [rarely subshrubs], deciduous, stems 1–2 cm (except also caulescent stems to 8 (–20) cm in D. intermedia), usually forming overwintering buds
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costa single, well developed, subpercurrent to excurrent, in section with 1 row of guide cells and 2 stereid bands, adaxial band sometimes much reduced;
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partially adnate to proximal 1/2 to entire length of ovary, free from ovary 1–2 mm, green; sepals 5, green tinged with red; petals 5, white or pink; nectariferous
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pollen-sacs. Seed-cones maturing in 1–2 years, generally persisting closed many years or until opened by fire, globose or oblong, 1–4 cm; scales persistent, 3–6 pairs
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