biology

Lilium pardalinum subsp. pitkinense

Lilium pardalinum subsp. pitkinense is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Lilium pardalinum subsp. pitkinense rather than just read about it. In short: Lilium pardalinum subsp. pitkinense, the Pitkin Marsh lily, is an endangered perennial herb of the family Liliaceae that is endemic to certain wetland areas in the northern California Coast Ranges of Sonoma County, California, United States. It is a subspecies of Lilium pardalinum.

Key takeaways

Lilium pardalinum subsp. pitkinense belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Lilium pardalinum subsp. pitkinense to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Lilium pardalinum subsp. pitkinense from memory before moving on to harder problems.

Reference excerpt

Lilium pardalinum subsp. pitkinense, the Pitkin Marsh lily, is an endangered perennial herb of the family Liliaceae that is endemic to certain wetland areas in the northern California Coast Ranges of Sonoma County, California, United States. It is a subspecies of Lilium pardalinum.

Distribution Lilium pardalinum subsp. pitkinense is found in the narrow elevation range of 35–60 metres (115–197 ft) above mean sea level. The Pitkin Marsh lily is found only in freshwater marshes and wet meadows in western Sonoma County, Northern California. There are only three known colonies of this rare species in the vicinity, including the Pitkin Marsh situated near State Route 116 between Sebastopol and Forestville, California. A land development proposal has been proposed which would infringe upon this marsh, which contains a second rare plant species, the white sedge, Carex albida. The historic range is thought to have been throughout a slightly wider portion of the wetlands of Sonoma County, with much higher densities of organisms, possibly ranging into the Laguna de Santa Rosa.

Description Lilium pardalinum subsp. pitkinense attains a height of 1–2 metres (3.3–6.6 ft). The leaves of the Pitkin Marsh lily are typically about 14 centimetres (5.5 in) long and one to two centimetres (0.39 to 0.79 in) in width. The whorled leaves of the Pitkin Marsh lily are staggered along the stem and are generally elliptical to oblanceolate in shape. Near the Pitkin Marsh, individuals are found which seem to be hybrids with the closely related Panther lily. The plant blooms in June and July. Petals are red at their outer margins, transitioning to yellow at the centers, with small dark maroon dots. The anthers are purplish-brown. This species is distinguished from its more common lookalike, the Leopard lily (Lilium pardalinum), by shorter petals and anthers.

Conservation The U.S. Federal Government undertook hearings on listing the Pitkin Marsh lily as early as 1996. In 1997 this species was placed on the United States list of endangered plants, and the State of California classified the plant as California Endangered in 1978. The habitat of this rare plant has been greatly reduced from historic levels primarily through cattle overgrazing; additional losses have been sustained by collectors seeking this plant for its rarity and beauty. Ongoing threats to this species are deemed to be cattle grazing and alteration of wetlands hydrology and water quality.

Five colonies status There are three known extant colonies of the Pitkin Marsh lily in wetland areas of western Sonoma County. The owner of the first property has denied researchers access to the colony since 1975. It is presumed that the plants still exist, but there is no confirmation of the number of organisms remaining. The second site is the Pitkin Marsh, which was nearly extirpated by land development in 1960s, but approximately 200 plants remain. A major subdivision is planned in the surrounding area, but a "conservation easement" agreement between the California Department of Fish and Game and the landowner will mitigate in preserving this population. The recent threat to the Pitkin Marsh colony occurred when a 27-acre (110,000 m2) parcel, including part of the marsh, was proposed for development as a 29-bed residential care facility. This zoning application is pending with the County of Sonoma. At the third known site, where this had once been a common species, only two individuals remain. This loss was due to wetland filling, but was primarily caused by the collection of specimens and bulbs for horticultural use. Owners of the latter two sites entered into voluntary protection agreements with The Nature Conservancy in 1989. The fourth site is Ragle Ranch Regional Park in Sabastopol Ca. There are several individuals but they are in decline due to being in a well traveled area of the park. The fifth site is a forest north east of the town of Bodega. Their status is unknown.

Illustrations

Worked examples

Example 1 — a first encounter with Lilium pardalinum subsp. pitkinense

Start with the simplest possible case. Write down what Lilium pardalinum subsp. pitkinense claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Lilium pardalinum subsp. pitkinense before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Lilium pardalinum subsp. pitkinense ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Lilium pardalinum subsp. pitkinense

In research: Lilium pardalinum subsp. pitkinense appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Lilium pardalinum subsp. pitkinense in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Lilium pardalinum subsp. pitkinense is common in secondary-school and first-year university syllabi. It links to neighbouring topics Critically endangered flora of California, Endemic flora of California, Endemic flora of the San Francisco Bay Area, so understanding it makes those chapters shorter.
In everyday life: Look for Lilium pardalinum subsp. pitkinense outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Lilium pardalinum subsp. pitkinense in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Lilium pardalinum subsp. pitkinense means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Lilium pardalinum subsp. pitkinense out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Lilium pardalinum subsp. pitkinense in simple terms?

Why does Lilium pardalinum subsp. pitkinense matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Lilium pardalinum subsp. pitkinense?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Lilium pardalinum subsp. pitkinense.