So I purchased this Dudleya from a local San Jose nursery. The customer service rep told me that it was the Dudleya Britonii after looking the plant up in their purchase records. I chuckled because it looks nothing like that! In the last picture below, you can see my mystery plant photographed with a Dudleya Pulverulenta which is commonly confused with the Dudleya Britonnii, so you can tell how vastly different the plants are.
Update: After doing research online, I think this plant looks very similar to Dudleya Ingens. I’m still going to continue to research to make sure though! 🙂
Mystery Dudleya width of over 30 cm /12 in
Impressive Long Cauex of about 18.5 cm /5 in
Mystery Dudleya Profile
Dudleya Pulverulenta and Dudleya Ingens
Dudleya Brittonii and Dudleya Ingens
June 1, 2012
urbanhorticulture
urban-horticulture 
2 responses to “Mystery Dudleya”
Arvind
June 3rd, 2012 at 05:28
The older the dudleya gets, the longer the stem. Don’t use stem length for id. I have a D. Brittonii that looks just like yours, and several others that look different. It may be a variable species. The only sure way to id is from the flowering parts.
urbanhorticulture
June 3rd, 2012 at 12:02
Hi Arvind, thank you for the advise on Dudleya identification. That’s amazing that D. Brittonii’s can look different and be called the same species name. That makes things more difficult for me as a fledgling Dudleya collector.